In-Situ Instrument for Rapid Detection of Nitrates and Nitrites in Water
[Li Cai; Gui Jing-chuan; Sun Ling-yan; Cao Wen-xi; Sun Zhao-hua; Yang Yue-zhong] Chinese Acad Sci, State Key Lab Trop Oceanog, South China Sea Inst Oceanol, Guangzhou 510301, Guangdong, Peoples R China; [Gui Jing-chuan; Sun Ling-yan] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; liclaire@scsio.ac.cn
2013
发表期刊SPECTROSCOPY AND SPECTRAL ANALYSIS
ISSN1000-0593
卷号33期号:6页码:1714-1718
摘要A new in-situ instrument to simultaneously and rapidly detect the nitrates and nitrites of water is presented based on the sequential injection analysis (SIA) and spectrophotometer. The optimal time and injection speed for incomplete chemical color reaction of nitrite with reagent and deoxidization efficiency of cadmium column on changing nitrate to nitrite were studied and selected to obtain the rapid detection speed (the detection time for a sample can be as short as 5 mins for nitrates and 4 min for nitrites) of nitrates and nitrites in situ. In this instrument, the liquid-core waveguide (LCW) was adopted to replace the quartz cuvette as the colorimetric cell to obtain a relatively low detection limit(nmol . L-1) and very small sample consumption, and all water sample was filtered before sample injection and measurement. These measures make this in-situ detection instrument have the advantages of complete automation, very quick detection speed, low weight and power consumption, and good versatility and extensibility. Only by replacing the reagent or LCW, it also can be used to measure the trace element of water or other nutrition elements such as phosphate, silicate etc, in different sea areas in profile or fixed-point.
部门归属LTO
关键词In-situ Measurement Incomplete Chemical Color Reaction Cadmium-copper Column Reduction Colorimetric Analysis Sequential Injection Analysis
学科领域Spectroscopy
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语种中文
WOS记录号WOS:000320012600055
引用统计
文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/10908
专题热带海洋环境国家重点实验室(LTO)
通讯作者liclaire@scsio.ac.cn
推荐引用方式
GB/T 7714
[Li Cai,Gui Jing-chuan,Sun Ling-yan,et al. In-Situ Instrument for Rapid Detection of Nitrates and Nitrites in Water[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS,2013,33(6):1714-1718.
APA [Li Cai.,Gui Jing-chuan.,Sun Ling-yan.,Cao Wen-xi.,Sun Zhao-hua.,...&liclaire@scsio.ac.cn.(2013).In-Situ Instrument for Rapid Detection of Nitrates and Nitrites in Water.SPECTROSCOPY AND SPECTRAL ANALYSIS,33(6),1714-1718.
MLA [Li Cai,et al."In-Situ Instrument for Rapid Detection of Nitrates and Nitrites in Water".SPECTROSCOPY AND SPECTRAL ANALYSIS 33.6(2013):1714-1718.
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