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Bibliographic Information
Determination of metal traces in polypropylene by gas chromatography. Slizhov, Yu. G.; Gavrilenko, M. A.. Tomsk State University, Tomsk, Russia. Russian Journal of Applied Chemistry (Translation of Zhurnal Prikladnoi Khimii) (2004), 77(2), 215-217. CODEN: RJACEO ISSN: 1070-4272. Journal written in English. CAN 141:261271 AN 2004:460160 CAPLUS (Copyright 2004 ACS on SciFinder (R)) Abstract A procedure was developed for detn. of metal traces in polypropylene on chromatog. sorbents and phases of various polarities. The thermal stability of volatile aluminum, chromium, and gallium acetylacetonates under the conditions of gas chromatog. was studied. The influence exerted on the detn. process by the column material, temp., and polarity of phases was examd. Bibliographic Information Influence of temperature on sensor properties of ZrO2-Al2O3-ZnO-TiO2 films. Gavrilenko, R. A.; Kozik, V. V.; Gavrilenko, M. A.. Kafedra Neorg. Khim., Tomsk. Gos. Univ., Tomsk, Russia. Izvestiya Vysshikh Uchebnykh Zavedenii, Khimiya i Khimicheskaya Tekhnologiya (2003), 46(8), 87-88. CODEN: IVUKAR ISSN: 0579-2991. Journal written in Russian. AN 2004:400119 CAPLUS (Copyright 2004 ACS on SciFinder (R)) Abstract Sensitivity and selectivity of gauges on the oxidn. basis to aniline may be improved by using Al2O3, TiO2 and ZrO2 dopes. Dependences between the thickness of the films, temp. of processing. formation of sensitivity and stability of sensor controls are established. The most perspective results are achieved with use of films contg. Al2O3 and TiO2 with the thickness of 160 nm and which are subjected to heat treatment at 700°C in oxygen within 60 min. Bibliographic Information Gas-chromatographic separation of enantiomers of amino acid trimethylsilyl derivatives on chelate-containing stationary phase. Slizhov, Yu. G.; Gavrilenko, M. A.; Losev, A. G. Tomsk. Gos. Univ., Tomsk, Russia. Zhurnal Fizicheskoi Khimii (2004), 78(2), 378-379. CODEN: ZFKHA9 ISSN: 0044-4537. Journal written in Russian. AN 2004:321830 CAPLUS (Copyright 2004 ACS on SciFinder (R)) Abstract Chromatog. properties of acetylacetonate zirconium modified with L-arginine were studied for sepn. of racemic amino acids derivs. The thermodn. parameters of adsorption of amino acid enantiomers on the stationary phase were calcd. The difference in partial molar free energies between complex formation sorbate-sorbent for different amino acid trimethylsilyl derivs. was sufficient for chromatog. resoln. of racemic mixts. Bibliographic Information Complexation with metal chelates at the phase interface in gas chromatography. Slizhov, Yu. G.; Gavrilenko, M. A.. Tomsk State University, Tomsk, Russia. Russian Journal of Coordination Chemistry (Translation of Koordinatsionnaya Khimiya) (2002), 28(10), 736-752. CODEN: RJCCEY ISSN: 1070-3284. Journal; General Review written in English. CAN 138:82604 AN 2002:752191 CAPLUS (Copyright 2004 ACS on SciFinder (R)) Abstract A review of studies on the use of the chelate complexes as adsorbents and stationary liq. phases in gas chromatog. is made. Data on the processes of complex formation at the phase interface and on the target prodn. of the chelate-contg. sorbents with preset properties are generalized. Practical application of the chelate-contg. chromatog. packings for anal. sepn. and sorption concn. of org. substances is considered. Bibliographic Information Application of chelates in gas chromatography. Slizhov, Yu. G.; Gavrilenko, M. A.. Journal of Analytical Chemistry (Translation of Zhurnal Analiticheskoi Khimii) (2001), 56(12), 1129. CODEN: JACTE2 ISSN: 1061-9348. Journal; Miscellaneous written in English. AN 2002:30417 CAPLUS (Copyright 2004 ACS on SciFinder (R)) Bibliographic Information Analysis of volatile products of curing of phthalic polyester resin. Kozik, V. V.; Slizhov, Yu. G.; Gavrilenko, M. A.; Borodina, I. A. Kafedra Org. Khim., Tomsk. Gos. Univ., Tomsk, Russia. Izvestiya Vysshikh Uchebnykh Zavedenii, Khimiya i Khimicheskaya Tekhnologiya (2001), 44(5), 167-168. CODEN: IVUKAR ISSN: 0579-2991. Journal written in Russian. CAN 136:263880 AN 2002:14945 CAPLUS (Copyright 2004 ACS on SciFinder (R)) Abstract Compn. of volatile products evolving in the process of curing of an unsatd. o-phthalic acid-based polyester was studied qual. and quant. using gas chromatog. The amts. volatile products detd. (styrene, p-xylene, m-xylene, benzene, toluene, ethylbenzene) were considered ecol. safe. Bibliographic Information New sorption material for concentration of phenol from water bodies. Slizhov, Yu. G.; Gavrilenko, M. A.. Tomsk. Gos. Univ., Tomsk, Russia. Khimiya v Interesakh Ustoichivogo Razvitiya (2001), 9(5), 695-697. CODEN: KIURFI ISSN: 0869-8538. Journal written in Russian. CAN 136:252084 AN 2001:878218 CAPLUS (Copyright 2004 ACS on SciFinder (R)) Abstract Europium acetylacetonate was applied for the selective preconcn. of phenol in GC anal. of water. Bibliographic Information Modification of the chromatographic properties of sorbents with grafted metal chelates by water vapor eluent. Slizhov, Yu. G.; Gavrilenko, M. A.. Tomsk. Gos. Univ., Tomsk, Russia. Zhurnal Fizicheskoi Khimii (2001), 75(10), 1864-1866. CODEN: ZFKHA9 ISSN: 0044-4537. Journal written in Russian. CAN 136:330962 AN 2001:863872 CAPLUS (Copyright 2004 ACS on SciFinder (R)) Abstract Chromatog. properties of sorbents on the base of Silipore-075 modified with grafted layers of nickel and iron acetylacetonates at use of water vapor as carrier are studied. Thermodn. characteristics of of interaction sorbent-sorbate are evaluated. Bibliographic Information Separation of hydrocarbons by steam carrier-gas chromatography on silipore with surface-bonded metal acetylacetonate layers. Slizhov, Yu. G.; Gavrilenko, M. A.; Matveeva, T. N. Tomsk. Gos. Univ., Tomsk, Russia. Neftekhimiya (2001), 41(2), 149-152. CODEN: NEFTAH ISSN: 0028-2421. Journal written in Russian. CAN 136:56086 AN 2001:767166 CAPLUS (Copyright 2004 ACS on SciFinder (R)) Abstract Chromatog. properties of Silipore 075 type adsorbents, modified with nickel, zinc, and iron acetylacetonates, using water vapor as carrier gas were studied. The selectivity of the sepn. of aliph. and arom. hydrocarbons on these sorbents was shown. The thickness of water film on the surface of sorbent was a factor affecting the selectivity of stationary phase. Bibliographic Information Properties of composites based on an unsaturated o-phthalic polyester resins and mineral fillers. Slizhov, Yu. G.; Kozik, V. V.; Borilo, L. P.; Vereshchagin, V. I.; Gavrilenko, M. A.. Tomsk. Gos. Univ., Russia. Izvestiya Vysshikh Uchebnykh Zavedenii, Khimiya i Khimicheskaya Tekhnologiya (2001), 44(4), 112-114. CODEN: IVUKAR ISSN: 0579-2991. Journal written in Russian. CAN 135:332033 AN 2001:619536 CAPLUS (Copyright 2004 ACS on SciFinder (R)) Abstract The authors studied the compatibility of unsatd. phthalic polyester with silicate mineral fillers, i.e. diopside, tremolite, wollastonite, serpentine, and mech. properties of the Me Et ketone peroxide cured composites. The results showed that those minerals can be used instead of asbestos. Bibliographic Information Change of the chromatographic properties of poly(methylsiloxane) modified by europium acetylacetonate due to temperature and irradiation. Slizhov, Yu. G.; Berezkin, V. G.; Gavrilenko, M. A.. Tyumen. Gos. Univ., Russia. Izvestiya Vysshikh Uchebnykh Zavedenii, Khimiya i Khimicheskaya Tekhnologiya (2001), 44(4), 109-111. CODEN: IVUKAR ISSN: 0579-2991. Journal written in Russian. CAN 135:338556 AN 2001:619535 CAPLUS (Copyright 2004 ACS on SciFinder (R)) Abstract Modifying polymethylsiloxane phase SE-30 by irradn. covered with europium acetylacetonate increases total polarity of a phase and selectivity of sepn. Its chromatog. property also varies under the action of temp. and g-irradn. The heat treatment changes polarity of the phase is less specific as compared with irradn. Sepn. of mixts. of spirits and ketones is carried out on the modified phases. |
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Bibliographic Information
Intermolecular interactions in poly(methyl methacrylate) modified with silver, copper, or neodymium trifluoroacetates. Mokrousov, G. M.; Gavrilenko, N. A.; Garber, N. G.; Gavrilenko, M. A.. Tomsk. Gos. Univ., Tomsk, Russia. Zhurnal Fizicheskoi Khimii (2001), 75(6), 1132-1134. CODEN: ZFKHA9 ISSN: 0044-4537. Journal written in Russian. CAN 135:273452 AN 2001:530417 CAPLUS (Copyright 2004 ACS on SciFinder (R)) Abstract Intermol. interactions of PMMA modified with Ag, Cu, or Nd trifluoroacetate were studied using gas-liq. chromatog. Donor-acceptor complexation with respect to nucleophilic compds. was obsd. This effect was attributed to delocalization of vacant orbitals of metal ions in competitive interaction with trifluoroacetate ion and the polymer matrix. Perspective use of modified PMMA as a selective phase in chromatog. was discussed. Bibliographic Information Effect of thermal treatment of poly(ethylene glycol) modified with europium acetylacetonate on its chromatographic properties. Slizhov, Yu. G.; Gavrilenko, M. A.. Tomsk. Gos. Univ., Romsk, Russia. Zhurnal Fizicheskoi Khimii (2001), 75(6), 1120-1121. CODEN: ZFKHA9 ISSN: 0044-4537. Journal written in Russian. CAN 135:273772 AN 2001:530413 CAPLUS (Copyright 2004 ACS on SciFinder (R)) Abstract The effect of thermal treatment on chromatog. properties of polyethylene glycol phase treated with Eu acetylacetonate was studied. Retention indexes of sorbates were detd. Selectivity of sepn. of aliph. alcs. and a-ketones increases in thermally treated phases. Bibliographic Information Gas-chromatographic properties of Silochrom with a surface layer of nickel dimethylglyoximate and acetylacetonate complexes. Slizhov, Yu. G.; Gavrilenko, M. A.. Tomsk State University, Tomsk, Russia. Journal of Analytical Chemistry (Translation of Zhurnal Analiticheskoi Khimii) (2001), 56(6), 538-541. CODEN: JACTE2 ISSN: 1061-9348. Journal written in English. CAN 135:146432 AN 2001:490242 CAPLUS (Copyright 2004 ACS on SciFinder (R)) Abstract The sepn. ability of surface layers of nickel dimethylglyoximate and acetylacetonate bonded to Silochrom S-80 silica gel was studied. The selectivity of sepn. was estd. for different classes of org. compds. The studied sorbents are promising for the sepn. of complex mixts. of high-boiling arom. compds. and oxygen-contg. compds. Bibliographic Information Use of metal acetylacetonates as a stationary phase in gas chromatographic separation of organic compounds. Slizhov, Yu. G.; Gavrilenko, M. A.; Matveeva, T. N. Tomsk. Gos. Univ., Tomsk, Russia. Zhurnal Prikladnoi Khimii (Sankt-Peterburg, Russian Federation) (2000), 73(8), 1286-1291. CODEN: ZPKHAB ISSN: 0044-4618. Journal written in Russian. CAN 134:187645 AN 2000:843832 CAPLUS (Copyright 2004 ACS on SciFinder (R)) Abstract The acetylacetonates of Fe3+, Zn3+ and Ni2+ deposited upon Silipor 075 and Chromaton N were evaluated as stationary phases for the gas chromatog. sepn. of alkanes, alkenes, arenes and aliph. acids. Bibliographic Information Sorption on a polysorb with a radiation-grafted chelate layer. Slizhov, Yu. G.; Berezkin, V. G.; Gavrilenko, M. A.; Kuryaeva, T. G.; Yan, G. Yu. Tomsk. Gos. Univ., Tomsk, Russia. Zhurnal Fizicheskoi Khimii (2000), 74(5), 950-951. CODEN: ZFKHA9 ISSN: 0044-4537. Journal written in Russian. CAN 133:151492 AN 2000:415693 CAPLUS (Copyright 2004 ACS on SciFinder (R)) Abstract Chromatog. properties are characterized of porous divinylbenzene-styrene copolymers radiochem. modified with Eu and Yb acetylacetonates. Sorption enthalpy of test compds. are detd. Bibliographic Information Gas chromatography separation of metal acetylacetonates on short quartz capillary columns. Slizhov, Yu. G.; Berezkin, V. G.; Gavrilenko, M. A.; Kuryaeva, T. T.; Arkhipova, I. M. Tomsk. Gos. Univ., Tomsk, Russia. Zhurnal Fizicheskoi Khimii (2000), 74(4), 725-729. CODEN: ZFKHA9 ISSN: 0044-4537. Journal written in Russian. CAN 133:159350 AN 2000:413832 CAPLUS (Copyright 2004 ACS on SciFinder (R)) Abstract Gas chromatog. sepn. of aluminum acetylacetonate, chromium acetylacetonate, scandium acetylacetonate, cobalt acetylacetonate, and rhodium acetylacetonate on capillary chromatog. columns (2 m) with grafted silicone phases (SE-30, SE-52, and trifuoropropylmethylsilicone) is described. Molar enthalpy and entropy of dissoln. in stationary phases are calcd. from chromatog. data. Bibliographic Information A gas-chromatography study of the thermodynamic characteristics of interaction of sorbates with combined liquid phases prepared from polyethylene glycol and metal acetylacetonates. Slizhov, Yu. G.; Gavrilenko, M. A.; Matveeva, T. N.; Pozhidaeva, N. B. Tomsk. Gos. Univ., Tomsk, Russia. Zhurnal Fizicheskoi Khimii (2000), 74(2), 297-299. CODEN: ZFKHA9 ISSN: 0044-4537. Journal written in Russian. CAN 133:34734 AN 2000:267806 CAPLUS (Copyright 2004 ACS on SciFinder (R)) Abstract The thermodn. characteristics were detd. for the interaction of org. sorbates with gas-chromatog. stationary phases based on copper, aluminum, or nickel acetylacetonate-modified poly(ethylene glycol). The results indicate the need to account for both physisorption and chemisorption when calcg. the thermodn. characteristics of the title process. Bibliographic Information Use of short capillary columns for separation of metal acetylacetonates. Slizhov, Yu. G.; Gavrilenko, M. A.; Kuryaeva, T. T. Tomskii Gos. Univ., Tomsk, Russia. Zhurnal Prikladnoi Khimii (Sankt-Peterburg) (2000), 73(2), 332-333. CODEN: ZPKHAB ISSN: 0044-4618. Journal written in Russian. CAN 133:52804 AN 2000:254537 CAPLUS (Copyright 2004 ACS on SciFinder (R)) Abstract The use of short capillary columns for sepn. of aluminum and chromium acetylacetonates is described. |
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Bibliographic Information
Styrene-divinylbenzene sorbents with an immobilized layer of europium acetylacetonate. Slizhov, Yu. G.; Berezkin, V. G.; Gavrilenko, M. A.; Kuryaeva, T. T. Tomsk. Gos. Univ., Tomsk, Russia. Izvestiya Vysshikh Uchebnykh Zavedenii, Khimiya i Khimicheskaya Tekhnologiya (1999), 42(5), 72-74. CODEN: IVUKAR ISSN: 0579-2991. Journal written in Russian. CAN 132:302689 AN 2000:164797 CAPLUS (Copyright 2004 ACS on SciFinder (R)) Abstract The results of an investigation into chromatog. properties of porous styrene divinylbenzene sorbents modified with europium acetylacetonate have been presented. Examd. are also thermal characteristics of sorbents. Detd. are Rorchneider polarity factors, as well as the possibility of using chromatog. packings produced for chromatog. sepn. of hydrocarbon mixts. and oxygen-contg. org. compds. Bibliographic Information Use of metal-chelate-modified polyethylene glycol liquid phase for gas-chromatographic determination of oxygen-containing compounds. Slizhov, Yu. G.; Gavrilenko, M. A.; Matveeva, T. N.; Pozhidaeva, N. V.; Chulynina, N. A. Tomsk. Gos. Univ., Russia. Zhurnal Prikladnoi Khimii (Sankt-Peterburg) (1999), 72(10), 1648-1651. CODEN: ZPKHAB ISSN: 0044-4618. Journal written in Russian. CAN 132:245601 AN 2000:96345 CAPLUS (Copyright 2004 ACS on SciFinder (R)) Abstract Mixts of alcs., aldehydes, and ketones are sepd. using a chromatog. stationary phase contg. metal complex-contg. compds. based on polyethylene glycol. Bibliographic Information Chromatographic behavior of silica gel modified with copper, nickel and europium chelates. Slizhov, Yu. G.; Gavrilenko, M. A.; Borbolin, A. A. Tomsk. Gos. Univ., Tomsk, Russia. Zhurnal Fizicheskoi Khimii (1999), 73(11), 2029-2033. CODEN: ZFKHA9 ISSN: 0044-4537. Journal written in Russian. CAN 132:145898 AN 1999:818592 CAPLUS (Copyright 2004 ACS on SciFinder (R)) Abstract Physicochem. properties of silipore 075 sorbent modified with nickel dimethylglyoxime, europium acetylacetonate, and copper oxyquinoline are described. The optimal conditions for the gas chromatog. sepn. and concn. metal chelates assuring the max. effectiveness and sepn. efficiency of sorbents for various org. compds. are given. Bibliographic Information Study of the shape of a chromatographic peak by spectroscopy of derivatives. Gavrilenko, M. A.; Slizhov, Yu. G. Tomsk. Gos. Univ., Tomsk, Russia. Izvestiya Vysshikh Uchebnykh Zavedenii, Khimiya i Khimicheskaya Tekhnologiya (1999), 42(2), 28-31. CODEN: IVUKAR ISSN: 0579-2991. Journal written in Russian. CAN 132:87466 AN 1999:757712 CAPLUS (Copyright 2004 ACS on SciFinder (R)) Abstract Chromatog. peaks were studied by differential spectroscopy of higher-order derivs. of alkanes and alkyl benzenes. There are fragments in different spectra which have been found to retain their stability when the vol. of the sample varies. Bibliographic Information Chromatographic properties of composite stationary phases based on polyethylene glycol and metal acetylacetonates. Slizhov, Yu. G.; Gavrilenko, M. A.; Matveeva, T. N.; Chulynina, N. A.; Mal''tseva, O. A. Tomskii Gos. Univ., Tomsk, Russia. Zhurnal Fizicheskoi Khimii (1999), 73(9), 1650-1653. CODEN: ZFKHA9 ISSN: 0044-4537. Journal written in Russian. CAN 132:87457 AN 1999:734334 CAPLUS (Copyright 2004 ACS on SciFinder (R)) Abstract Chromatog. properties of stationary phases based on polyethylene glycol (PEG 20M) and nickel acetylacetonate, aluminum acetylacetonate and copper acetylacetonate are reported. Sepn. efficiencies, sorption capacities, and selectivity within a homolog series as well as between groups for alkanes, alkenes, and alkylbenzenes are given. Prepn. of astationary phase based on nickel acetylacetonate is described using exptl. data. Bibliographic Information New combined stationary phases for determination of certain phenols. Slizhov, Yu. G.; Gavrilenko, M. A.; Matveeva, T. N.; Mizin, P. A. Tomsk. Gos. Univ., Tomsk, Russia. Ekologicheskaya Khimiya (1999), 8(2), 88-90. CODEN: EKKHFM ISSN: 0869-3498. Journal written in Russian. CAN 132:102162 AN 1999:717982 CAPLUS (Copyright 2004 ACS on SciFinder (R)) Abstract Some new combined phases for gas chromatog. are synthesized on the base of complex compds. of copper and nickel. Chromatog. characteristics of these phases are investigated. It is found that the sorbent modified by phenanthroline complex has enhanced selectivity for sepn. of phenols. Bibliographic Information Correlation between capacity factors of alkanes under conditions of head-space analysis on chelate-modified adsorbents. Slizhov, Yu. G.; Gavrilenko, M. A.. Dep. Chem., Tomsk State Univ., Tomsk, Russia. Journal of Analytical Chemistry (Translation of Zhurnal Analiticheskoi Khimii) (1999), 54(6), 554-556. CODEN: JACTE2 ISSN: 1061-9348. Journal written in English. CAN 131:67398 AN 1999:393480 CAPLUS (Copyright 2004 ACS on SciFinder (R)) Abstract A correlation is found between capacity factors of substances detd. under conditions of headspace anal. in a flow of helium and water vapor on adsorbents modified with metal chelates. Bibliographic Information Use of silica gel modified with metal chelates for separation of hydrocarbons and their derivatives in vapor-phase chromatography. Slizhov, Yu. G.; Berezkin, V. G.; Gavrilenko, M. A.. Tomsk. Gos. Univ., Tomsk, Russia. Neftekhimiya (1998), 38(5), 374-376. CODEN: NEFTAH ISSN: 0028-2421. Journal written in Russian. CAN 131:53345 AN 1999:298719 CAPLUS (Copyright 2004 ACS on SciFinder (R)) Abstract An adsorbent prepd. by modification of silica with metal chelates for sepn. of hydrocarbons and their derivs. in vapor-phase chromatog. is described. The use of water vapor as the mobile phase allows for the rapid detn. of alkanes and alcs. without a decrease in selectivity. The column packed with a silipore 075 modified with 5% nickel dimethylglyoxime gave the most rapid detns. Bibliographic Information Gas-chromatography retention of organic compounds with poly(methyl methacrylate), highly filled with copper ions, used as a stationary liquid phase on Silipore 075. Slizhov, Yu. G.; Gavrilenko, M. A.; Gavrilenko, N. A. Tomsk. Gos. Univ., Tomsk, Russia. Zhurnal Fizicheskoi Khimii (1998), 72(5), 950-951. CODEN: ZFKHA9 ISSN: 0044-4537. Journal written in Russian. CAN 129:144381 AN 1998:379989 CAPLUS (Copyright 2004 ACS on SciFinder (R)) Abstract Changes in sorption properties of Silipore 075 modified with copper ions and PMMA in a polymer phase transition were examd. The phase transition changed the retention of org. compds. up to the retention inversion. Data for heptane and benzene are discussed. Bibliographic Information Simultaneous determination of the constituents of a redox couple using the modified Gran function. Mar''yanov, B. M.; Gavrilenko, M. A.. Chemistry Department, Tomsk State University, Tomsk, Russia. Journal of Analytical Chemistry (Translation of Zhurnal Analiticheskoi Khimii) (1997), 52(11), 1026-1029. CODEN: JACTE2 ISSN: 1061-9348. Journal written in English. CAN 128:56791 AN 1997:738801 CAPLUS (Copyright 2004 ACS on SciFinder (R)) Abstract A method is proposed for the simultaneous detn. of the constituents of a redox couple using data of potentiometric titrn. It is based on the correlation and regression anal. of the modified Gran function. The method was validated using a model titrn. Fe(II)/Fe(III)-K2Cr2O7 system. For comparable starting concns. of oxidized and reduced iron species, the detn. error does not exceed 0.6%; relative std. deviation for Fe(II) and Fe(III) are 0.1-0.2% and 1.5%, resp. Bibliographic Information Linear regression analysis of potentiometric titration data for asymmetric redox reactions. Mar''yanov, B. M.; Gavrilenko, M. A.. Tomsk State University, Tomsk, Russia. Journal of Analytical Chemistry (Translation of Zhurnal Analiticheskoi Khimii) (1997), 52(6), 508-513. CODEN: JACTE2 ISSN: 1061-9348. Journal written in English. CAN 127:130176 AN 1997:441822 CAPLUS (Copyright 2004 ACS on SciFinder (R)) Abstract A statistical method is proposed for treating potentiometric titrn. curves for homogeneous asym. redox reactions. The method is based on the use of a math. model for the transformation of the branch of a titrn. curve in the region of potentials of a reversible redox couple into a linear regression characteristic whose slope numerically coincides with the equiv. titrant vol. to an accuracy of the LS estn. The method was verified in the model titrimetric system Mohr''s salt-K2Cr2O7 and used for detg. tellurium in an individual soln., in a semiconductor CdTe alloy, and in a CdTe ceramic. The random error in the estn. of the equivalence point by the data of a sep. titrn. of 0.1-0.01 M solns. does not exceed 0.3%. In the case of titrn. of a 0.001 M soln., this error increases to 1.2%. The value of relative std. deviation varies from 0.06 to 0.7%. Bibliographic Information Data processing for potentiometric precipitation titration of mixtures of isovalent ions by linear regression analysis. Maryanov, V. M.; Shumar, S. V.; Gavrilenko, M. A.. Tomsk St. Univ., Tomsk, Russia. Zhurnal Analiticheskoi Khimii (1994), 49(9), 946-51. CODEN: ZAKHA8 ISSN: 0044-4502. Journal written in Russian. CAN 122:22734 AN 1995:172594 CAPLUS (Copyright 2004 ACS on SciFinder (R)) Abstract A method was developed for computerized processing of the curves of potentiometric differential titrn. using pptn. reactions. This method is based on the transformation of the titrn. curve into a line of multiphase regression, whose parameters det. the equiv. points and the soly. products of the formed ppts. The computational algorithm is realized as a computer program written in PASCAL and is tested using theor. titrn. curves (simulated by the Monte Carlo method) and exptl. titrn. curves for a soln. contg. Hg(II) and Cd(II) by sodium diethyldithiocarbamate, monitored by using chalcogenide (CdS and HgS) and metal (Ag and Pt) electrodes. The random errors (relative std. deviation) for the titrn. of 1 ´ 10-3-1 ´ 10-4 M solns. are at 3-6%. A method for the calcn. of the electrode-function slope based on the data of potentiometric differential titrn. is also suggested, and the effect of the measuring errors on the estd. values of the equiv. points is considered. |
