field study of the relationship between sulfide-bound metals and bioaccumulation by Limnodrilus sp. in a heavily polluted river

• Published in: Environmental monitoring and assessment 2014-08, Vol.186 (8), p.4935-4946
• Main Authors: Li, Feng, Zeng, Xiang-yun, Yu, Yun-jun, Wu, Chang-hua, Mai, Ge, Song, Wei-wei, Wen, Yan-mao, Duan, Zhi-peng, Yang, Jia-yu
• Format: Article
• Language: English
• Subjects: Animals; Atmospheric Protection/Air Quality Control/Air Pollution; Benthic fauna; Bioaccumulation; Bioavailability; Cadmium; Civil engineering; Developing countries; Earth and Environmental Science; Ecology; Ecotoxicology; Environment; Environmental impact; Environmental Management; Environmental Monitoring; Environmental science; Field study; foods; Freshwater; Geologic Sediments - chemistry; Invertebrates; LDCs; Lead; Limnodrilus; Metal concentrations; Metals; Metals, Heavy - analysis; Metals, Heavy - chemistry; Metals, Heavy - metabolism; Monitoring/Environmental Analysis; Oligochaeta - metabolism; Pollution; Pore water; Rivers; Rivers - chemistry; Sediments; Studies; Sulfides; Sulfides - analysis; Sulfides - chemistry; Toxicity; trace elements; Trace metals; Water Pollutants, Chemical - analysis; Water Pollutants, Chemical - chemistry; Water Pollutants, Chemical - metabolism; Water pollution
• ISSN: 0167-6369; 1573-2959
• DOI: 10.1007/s10661-014-3749-y

Acid volatile sulfide (AVS) has been regarded as an important factor controlling metal bioavailability in anoxic sediments, but its effect on metal accumulation under natural conditions is poorly understood. Here, a field study of the influence of AVS on metal accumulation by Limnodrilus sp. in a heavily polluted river is provided. Most of the study area was subject to anaerobic and strongly reducing conditions, and the concentration of trace metals in surface sediments was high, as were the concentration of AVS and simultaneously extracted metals (SEM; average AVS = 20.3 μmol g⁻¹, average ∑SEM₅ = 9.42 μmol g⁻¹; ∑SEM₅ refers to the sum of SEMCd, SEMCᵤ, SEMPb, SEMNᵢ, and SEMZₙ). Only a few species and small quantities of benthic invertebrates were found, and Limnodrilus sp. was dominant. There was no correlation between trace metal accumulation and (SEM-AVS), and in stations where (SEM-AVS)