A volumetric or colorimetric determination of FeS and H2S in sediments by oxidation to sulphate

被引：0
|
作者：
Golterman, HL [1 ]
机构：
[1] STN BIOL TOUR VALAT,ASSOC LEIDEN CAMARGUE,F-13200 ARLES,FRANCE
来源：
HYDROBIOLOGIA | 1996年 / 335卷 / 01期
关键词：
FeS; H2S; NaClO; sulphate; sediments;
D O I：
10.1007/BF00013686
中图分类号：
Q17 [水生生物学];
学科分类号：
071004 ;
摘要：
A method has been developed for the determination of H2S and FeS in sediments. FeS is converted into H2S which is flushed from the samples directly into an excess of chlorine bleach, NaClO or KClO with some Zn2+ added. Either the excess can be titrated back potentiometrically with As2O3, or the sulphate formed can be measured colorimetrically. The precision is primarily controlled by the homogeneity of the sediment suspensions and can be better than 99%.
引用
收藏
页码：83 / 86
页数：4
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