DOI: 10.1016/j.marpolbul.2017.09.018
Scopus记录号: 2-s2.0-85029226516
论文题名: Offshore iron sand extraction in New Zealand: Potential trace metal exposure of benthic and pelagic biota
作者: Vopel K. ; Pook C. ; Wilson P. ; Robertson J.
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: 324
结束页码: 328
语种: 英语
英文关键词: Cadmium
; Chromium
; Copper
; Lead
; New Zealand
; Nickel
; Offshore iron sand exploitation
; South Taranaki Bight
; Trace metal
; Zinc
Scopus关键词: Biochemistry
; Cadmium
; Chromium
; Copper
; Iron
; Iron metallurgy
; Iron ores
; Lead
; Metals
; Nickel
; Sand
; Seawater
; Trace analysis
; Trace elements
; Water quality
; Zinc
; Extraction process
; Iron sand
; New zealand
; South Taranaki Bight
; Trace metal
; Trace metal concentration
; Trace metal contents
; Water quality guidelines
; Extraction
; cadmium
; chromium
; copper
; iron
; lead
; nickel
; sea water
; trace metal
; zinc
; benthos
; biota
; cadmium
; chromium
; copper
; iron
; lead
; nickel
; pelagic ecosystem
; pollution exposure
; zinc
; Article
; benthos
; bioavailability
; chemical analysis
; concentration (parameters)
; controlled study
; dilution
; elutriate test
; environmental exploitation
; environmental exposure
; extraction
; mass
; New Zealand
; offshore iron sand extraction
; pelagic species
; sea pollution
; sediment
; water quality
; New Zealand
Scopus学科分类: Agricultural and Biological Sciences: Aquatic Science
; Earth and Planetary Sciences: Oceanography
; Environmental Science: Pollution
英文摘要: Plans to exploit an offshore source of iron sand in South Taranaki Bight (STB), New Zealand, caused concerns that such exploitation may expose benthic and pelagic biota to elevated trace metal concentrations. We conducted dilute-acid extractions and standard elutriate tests to investigate the potential of this exploitation to (1) create a new seafloor with elevated trace metal content, (2) mobilise trace metals during iron sand extraction and, (3) enrich the returning process seawater, which feeds iron sand through mills, with trace metals. We found that recruits of freshly uncovered sediment may encounter higher-than-natural concentrations of cadmium, nickel and chromium (but not of copper, lead, and zinc) and propose to investigate the bioavailability of these metals. Elutriate test with raw and milled iron sand revealed that, for nickel and copper, dilution of the process seawater may be required to meet the local water quality guideline. We argue that this dilution can be achieved by adjustment of the mass and seawater balance of the offshore extraction process. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/87513
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: School of Science, Auckland University of Technology, Private Bag 92006, Auckland, New Zealand
Recommended Citation:
Vopel K.,Pook C.,Wilson P.,et al. Offshore iron sand extraction in New Zealand: Potential trace metal exposure of benthic and pelagic biota[J]. Marine Pollution Bulletin,2017-01-01,123(2018-01-02)