| Literature DB >> 29564558 |
Olga Cavoura1,2, Christine M Davidson3, Nicholas Katsiris4, Helen E Keenan5.
Abstract
A rapid, inexpensive, colorimetric screening method for mercury (Hg) has been optimized to provide a semi-quantitative measurement of Hg concentration in marine sediment within the range 0.038 to 1.5 mg kg-1 encompassing the interim sediment quality guideline (ISQG) value of 0.13 mg kg-1 (CCME 1999) and the probable effects level (PEL) of 0.7 mg kg-1 for Hg in marine sediment (CCME 1999). Neither salinity (up to 41 practical salinity units (psu)) nor sediment organic matter (ΟΜ) content (up to 10%) affected the performance of the method. Accurate results were obtained for spike recovery experiments and analysis of certified reference material (CRM) BCR 580 Estuarine Sediment. The method was applied to sediment samples from Elefsina Bay, Greece. Screening results indicated Hg contamination in the bay, with concentrations exceeding the PEL value. Findings were confirmed by quantitative analysis of the samples by cold vapor atomic absorption spectrometry (CV-AAS), where results in the range 1.4-2.96 mg kg-1 were determined.Entities:
Keywords: Colorimetric; Elefsina; Marine; Mercury; Screening; Sediment
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Year: 2018 PMID： 29564558 DOI： 10.1007/s10661-018-6612-8
Source DB: PubMed Journal: Environ Monit Assess ISSN： 0167-6369 Impact factor: 2.513