Determination of lead and cadmium in soils, sludges, and fertilizers by an ion-exchange/spectrophotometric method
- Hach Co., Ames, IA (United States). Hach Ames Chemical Research
- Hach Co., Ames, IA (United States). Hach Corporate Research
The MetalTrace method, which consists of an anion-exchange separation coupled with a spectrophotometric quantification, was used to determine lead and cadmium in sulfuric acid-hydrogen peroxide digests of soils and sludges and hydrobromic acid extracts of soils. Cadmium only was determined in sulfuric acid-hydrogen peroxide digests of fertilizers because no standards were available with certified lead contents. The selectivity provided by the anion-exchange separation allowed the use of a spectrophotometric indicator with an extremely high extinction coefficient so that detection limits in the low parts per million range could be attained. The results obtained using this method compared favorably with those obtained using much more expensive methods requiring more specialized training and equipment.
- OSTI ID:
- 140057
- Report Number(s):
- CONF-9106444-; ISBN 0-8031-1475-3; TRN: IM9332%%37
- Resource Relation:
- Conference: Symposium on the application of agricultural analysis in environmental studies, Atlantic City, NJ (United States), 27-28 Jun 1991; Other Information: PBD: 1993; Related Information: Is Part Of Application of agricultural analysis in environmental studies; Hoddinott, K.B.; O`Shay, T.A. [eds.]; PB: 178 p.
- Country of Publication:
- United States
- Language:
- English
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