Determination of trace tin in food by solid-phase spectrophotometry

被引：0

作者：

Ni, G ^{[1
]}

Yuan, L ^{[1
]}

Gao, JZ ^{[1
]}

机构：

[1] NW Normal Univ, Dept Chem, Lanzhou 730070, Peoples R China

来源：

SPECTROSCOPY AND SPECTRAL ANALYSIS | 2002年 / 22卷 / 01期

关键词：

solid-phase spectrophotometry; tin; food;

D O I：

暂无

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

A new method for the determination of trace amounts of tin by resin-phase spectrophotometry has been developed and the detailed experimental conditions investigated. Tin ion reacts with procatechol violet(PV) in potassium hydrogen phthalate-HCl buffer media(pH2.5) to form a stable complex. The complex enriched on an anion-exchange resin has a maximum absorption wavelength of 570 nm. The absorbance is directly proportional to the concentration of tin in the region of 0-150 mug. L-1 with an apparent molar absorptivity of 7.2 x 10(6) L.moL(-1) . cm(-1) Most of the co-existed metal ions do not interfere the determination of tin ion. The developed procedure has been successfully employed to the determination of tin in some food examples.

引用

页码：118 / 119

页数：2

共 7 条

[1] SOLID-PHASE SPECTROPHOTOMETRIC DETERMINATION OF TRACE AMOUNTS OF VANADIUM AT SUB-NG/ML LEVEL WITH 4-(2-PYRIDYLAZO)RESORCINOL
FERNANDEZDECORDOVA, ML
MOLINADIAZ, A
PASCUALREGUERA, MI
CAPITANVALLEY, LF
[J]. TALANTA, 1995, 42 (08) : 1057 - 1065
[2] DETERMINATION OF MOLYBDENUM IN SEA-WATER BY SOLID-PHASE SPECTROPHOTOMETRY
NUKATSUKA, I
NISHIMURA, A
OHZEKI, K
[J]. ANALYTICA CHIMICA ACTA, 1995, 304 (02) : 243 - 247
[3] APPLICATION OF PYROCATECHOL VIOLET AS A COLORIMETRIC REAGENT FOR TIN
ROSS, WJ
WHITE, JC
[J]. ANALYTICAL CHEMISTRY, 1961, 33 (03) : 421 - &
[4] Simultaneous determination of aluminium and beryllium at the subnanogram per millilitre level by solid-phase derivative spectrophotometry
Valencia, MC
Boudra, S
BosqueSendra, JM
[J]. ANALYTICA CHIMICA ACTA, 1996, 327 (01) : 73 - 82
[5] WENG YZ, 1976, CHINESE J ANAL CHEM, V4, P290
[6] YOSHIMURA K, 1976, TALANTA, V23, P449, DOI 10.1016/0039-9140(76)80126-9
[7] ZHANG DL, 1976, CHINESE J ANAL CHEM, V4, P218

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