DOI: 10.1016/j.marpolbul.2017.08.063
Scopus记录号: 2-s2.0-85028717690
论文题名: Kinetic and equilibrium based fractionation study of Pb in continental shelf sediment of India
作者: Chakraborty S. ; Chakraborty P. ; Sarkar A. ; Nagender Nath B.
刊名: Marine Pollution Bulletin
ISSN: 0025-326X
EISSN: 1879-3363
出版年: 2017
卷: 123, 期: 2018-01-02 起始页码: 188
结束页码: 196
语种: 英语
英文关键词: Geochemical fractionation
; Kinetic fractionation
; Pb fractionation
; Pb geochemistry
; Sedimentary Pb
Scopus关键词: Extraction
; Geochemistry
; Kinetics
; Positive ions
; Sedimentology
; Analytical method
; Continental shelf sediments
; Continental shelves
; Geochemical fractionations
; Kinetic extractions
; Kinetic fractionations
; Sedimentary organic matter
; Sequential extraction
; Sediments
; bicarbonate
; carbonic acid
; ferric hydroxide
; lead
; manganese
; manganese hydroxide
; organic matter
; unclassified drug
; water
; coastal sediment
; continental shelf
; equilibrium
; fractionation
; geochemical method
; geochemistry
; kinetics
; lead
; analytic method
; Article
; concentration (parameters)
; continental shelf sediment
; controlled study
; fractionation
; geochemistry
; India
; kinetic extraction
; molecular stability
; physical chemistry
; sediment
; sequential extraction
; solubility
; India
Scopus学科分类: Agricultural and Biological Sciences: Aquatic Science
; Earth and Planetary Sciences: Oceanography
; Environmental Science: Pollution
英文摘要: Two independent analytical methods (kinetic and sequential extraction protocols) were used to understand the distribution, stability, and lability of Pb-sediment complexes in Indian continental shelf. The concentrations of sedimentary Pb varied from 12.0 ± 0.6 to 30.4 ± 0.1 mg·kg− 1 and 15.9 ± 0.3 to 36.7 ± 0.4 mg·kg− 1 in the western and eastern shelf of India respectively. The kinetic extraction study showed that higher proportion of labile Pb-complexes were present in the eastern shelf sediments (~ 24% of total Pb) than the western shelf sediments (~ 14% of total Pb). The sedimentary organic matter was found to regulate lability of sedimentary Pb complexes. The sequential extraction study suggested that Fe/Mn oxyhydroxide were the primary hosting phase for labile Pb complexes. This study showed that water soluble, exchangeable, carbonate/bicarbonate-Pb complexes in the sediments was labile. This study provides a better physicochemical description of stability or lability of Pb complexes in the coastal sediment of India. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/87525
Appears in Collections: 过去全球变化的重建 全球变化的国际研究计划
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作者单位: CSIR-National Institute of Oceanography (CSIR), India, Dona Paula, Goa, India; Regional Research Station (Red & Laterite Zone), Bidhan Chandra Krishi Viswavidyalaya, Paschim Medinipur, Jhargram, West Bengal, India
Recommended Citation:
Chakraborty S.,Chakraborty P.,Sarkar A.,et al. Kinetic and equilibrium based fractionation study of Pb in continental shelf sediment of India[J]. Marine Pollution Bulletin,2017-01-01,123(2018-01-02)