Acta Chimica Academiae Scientiarum Hungaricae, Chem. Analit.

[kardi]

Всем привет!
Помогите, пожалуйста, найти статьи:
1) Журнал: Acta Chimica Academiae Scientiarum Hungaricae (Acta Chim Acad Sci Hungar)
Автор: Marczenko Z.
Год:1961
Том 26 (возможно это неточная инфа)
Стр. 347 (возможно это тоже неточная инфа)
Further information - Acta Chimica Academiae Scientiarum Hungaricae currently does not have a website.

2) Журнал: Chem. Analit. (PRL)
Автор: Marczenko Z.
Год:1960
Том 5 (возможно это неточная инфа)
Стр. 903 (возможно это тоже неточная инфа)
Заранее премного благодарна.

[aber]

1. Colorimetric determination of cerium by means of formaldoxime
By Marczenko, Zygmunt
From Acta Chimica Academiae Scientiarum Hungaricae (1961), 26, 347-54. Language: French, Database: CAPLUS

cf. Chem. Anal. (Warsaw) 5, 747-61(1960). Ce is detd. colorimetrically by adding excess solid triformaldoxime-HCl to the acid soln. of Ce, adjusting the pH to 13, and measuring the absorbance at 400 mμ after 10 min. The molar absorptivity is 3150. The effect of pH, time, excess reagent, cations, and anions is given. EDTA, phosphates, and fluorides interfere. Fe, Mn, Ti, and Al are almost negligible when Ce is pptd. as the oxalate. The complex is [Ce(CH3NO)6]--. The Ce(III) complex is oxidized by air.

2. Modern views on complex formation
By Marczenko, Zygmunt
From Chemia Analityczna (Warsaw, Poland) (1961), 6, 3-16. Language: Unavailable, Database: CAPLUS

A review with 94 references.

3. Separation and photocolorimetric determination of small amounts of selenium
By Marczenko, Zygmunt; Kotarski, Andrzej
From Chemia Analityczna (Warsaw, Poland) (1960), 5, 235-42. Language: English, Database: CAPLUS

cf. Analyst 81, 607(1956). Treat a sample, powder or liquid (5-20 ml., contg. 0.2-4 mg. Se), with 2 ml. H2SO4 (1:1) (if the sample does not contain free H2SO4) and 30 ml. concd. HCl, heat, add dropwise 12 ml. aq. Br2, and distil off to white fumes. Cool, add 10 ml. concd. HCl, and, during distn., add dropwise 5 ml. aq. Br2. Distil again to white fumes. To the combined distillates, add 2 ml. 5% aq. gum arabic, 10% SnCl2 in HCl (1:9) in 2 ml. excess over the amt. reducing Br completely, and fill with H2O to 100 ml. Det. absorption after 10 min., with reference to pure H2O, on a Visomat KWT colorimeter with photocells GC8GE and blue filter. Standards contained 0.1 mg. Se/ml. The method can be used for detg. Se in H2SO4, inorg. salts, and org. substances, and is useful in serial analyses.

4. Rapid determination of KClO3 and K2Cr2O7 in the mass for match heads
By Marczenko, Zygmunt; Skorko-Trybulowa, Zofia
From Chemia Analityczna (Warsaw, Poland) (1960), 5, 71-7. Language: English, Database: CAPLUS

cf. Furman, Scott's Standard Methods of Chemical Analysis, London 1947. Boil under cover a 2-g. sample with 120 g. distd. water for 10-15 min., add 10 drops concd. aq. NH3 and 100 g. coagulating agent prepd. by dissolving 12.5 g. KAl(SO4)2.12H2O and 25 g. NH4Fe(SO4)2.12H2O in water with 3 ml. concd. H2SO4 and dilg. to 1 l. Filter, wash with hot water, cool the filtrate, and dil. with water to 250 ml. (soln. A). To det. KClO3 add to 25 ml. (A), 50 ml. 0.2N Mohr's salt, boil for 5 min., cool, and titrate Fe++ with 0.2N KMnO4 to a permanent color change within a few min. In a similar way titrate a standard soln. of 25 ml. water + 50 ml. 0.2N Mohr's salt. To det. K2Cr2O7: to 25 ml. (A) add 2 ml. aq. concd. NH3 and about 0.5 g. NH4 peroxydisulfate, heat under cover to loss of color, add 10 ml. H2SO4 (1:3), and det. K2Cr2O7 colorimetrically. Precision error, standard deviation of single detn., and standard deviation of the arithmetic mean were 0.48, 0.0003, and 0.0001%, resp.

[Viksya]

aber, а это у Вас все к чему?

[aber]

kardi не знает точных ссылок и может теперь уточнить.
Кроме того, возможно ему достаточно реферата

[Ol.Lo]

[kardi]

Спасибо за сотрудничество!