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A rapid screening method for acid‐volatile sulfide in sediments
Author(s) -
Simpson Stuart L.
Publication year - 2001
Publication title -
environmental toxicology and chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.1
H-Index - 171
eISSN - 1552-8618
pISSN - 0730-7268
DOI - 10.1002/etc.5620201201
Subject(s) - reagent , sediment , purge , sulfide , trap (plumbing) , environmental chemistry , contamination , chemistry , environmental science , sediment trap , chromatography , geology , environmental engineering , waste management , biology , organic chemistry , ecology , paleontology , total organic carbon , engineering
A new, direct method for the determination of acid‐volatile sulfide (AVS) in sediments is presented. The method utilizes the direct reaction of Clines reagent with small amounts of sediment followed by colorimetric determination of AVS and offers fast analysis times without the need for specialized glassware or equipment. A comparison between AVS measured by this method and that measured by a purge‐and‐trap AVS method shows a linear relationship ( r = 0.986, p < 0.001), although the method underestimates the AVS concentration measured by the purge‐and‐trap method. Sample throughput by the direct AVS method is more than 10 times that of purge‐and‐trap methods. The applicability of the direct AVS method to the rapid screening of AVS concentrations in sediments and for evaluating sediment quality with respect to metal contamination is demonstrated.