Molybdenum background and pollution levels in the Taipu River, China

Autor:	Feipeng Li, Mengmeng Chen, Lingchen Mao, Yue Wang, Hong Tao
Rok vydání:	2021
Předmět:	Delta Pollution Residue (complex analysis) media_common.quotation_subject chemistry.chemical_element Contamination Background level chemistry Molybdenum Environmental chemistry Yangtze river Environmental Chemistry Ecotoxicology Environmental science media_common
Zdroj:	Environmental Chemistry Letters. 20:1009-1015
ISSN:	1610-3661 1610-3653
DOI:	10.1007/s10311-021-01365-x
Popis:	Pollution of river sediments by industrial molybdenum (Mo) is a potential threat to human and ecosystem health, yet the lack of a geochemical background level for Mo has limited risk assessment. Here, we studied Mo in 25 surface sediments and 8 core sediments in the Taipu River, Yangtze River Delta region, China. We measured total Mo and Mo in acid-extractable, reducible, oxidizable and residue fractions. Results show a background Mo level of 0.35 mg/kg of natural Mo in core samples. Surface sediments are contaminated with an average Mo concentration of 0.58 mg/kg, ranging from 0.22 to 3.47 mg/kg. The highest proportion of Mo in oxidizable, of about 74%, is observed in the most contaminated samples, whereas that of deep subsurface samples is about 22%. Possible pollution sources include dyeing, textile and metal casting.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a94f0958bc0bd4a39aa2be4ad4817273 https://doi.org/10.1007/s10311-021-01365-x Zobrazit plný text záznamu Full text from SpringerLink