Preconcentration with Chlorella vulgaris combined with energy dispersive X-ray fluorescence spectrometry for rapid determination of Cd in water

doi:10.1098/rsos.200182

	Preconcentration with Chlorella vulgaris combined with energy dispersive X-ray fluorescence spectrometry for rapid determination of Cd in water
	Gan, Tingting 1,2; Zhao, Nanjing 1,2; Yin, Gaofang 1,2; Chen, Min 1,2,3; Wang, Xiang 1,2,3; Hua, Hui 1,2,3
刊名	ROYAL SOCIETY OPEN SCIENCE
	2020-05-13
卷号	7
关键词	cadmium X-ray fluorescence algae preconcentration rapid detection
ISSN号	2054-5703
DOI	10.1098/rsos.200182
通讯作者	Zhao, Nanjing(njzhao@aiofm.ac.cn)
英文摘要	Freshwater green algae Chlorella vulgaris was selected as an adsorbent, and a simple, rapid, economical and environmentally friendly method for the detection of heavy metal Cd in water samples based on preconcentration with C. vulgaris combined with energy dispersive X-ray fluorescence (EDXRF) spectrometry was proposed. Chlorella vulgaris could directly and rapidly adsorb Cd2+ without any pretreatment, and the maximum adsorption efficiency could be obtained when the contact time was 1 min with an optimal pH of 10. The obtained Cd-enriched thin samples after preconcentration with C. vulgaris by suction filtration of reaction solution had very good uniformity, which could be directly measured by EDXRF spectrometry, and the net integral fluorescence intensity of Cd K alpha characteristic peak had a very good linear relationship with the initial concentration of Cd in the range of 0.703-74.957 mu g ml(-1) with a correlation coefficient of 0.9979. When the Cd thin samples with a Cd-enriched region of 15.1 mm in diameter were formed by the developed preconcentration method with suction filtration of 10 ml reaction solution, the detection limit of this method was 0.0654 mu g ml(-1), which was lower than the maximum allowable discharge concentration of Cd in various industrial wastewaters. The proposed method was simple to operate, and could effectively remove the influence of matrix effect of water samples and effectively improve the sensitivity and stability of EDXRF spectrometry directly detecting heavy metals in water samples, which was successfully applied to detect Cd in real water samples with satisfactory results, and the recoveries ranged from 94.80% to 116.94%. Moreover, this method can be applied to the rapid detection and early warning of excessive Cd in discharged industrial wastewaters. This work will provide a methodological basis for the development of rapid and online monitoring technology and instrument of heavy metal pollutants in water.
资助项目	National Natural Science Foundation of China[61805254] ; National Key Research and Development Program of China[2016YFC1400602] ; Chinese Academy of Sciences Instrument and Equipment Function Development Technology Innovation Project[Y93H3g1251] ; Anhui Provincial Excellent Youth Science Foundation of China[1908085J23] ; Marine National Laboratory Open Foundation Program of China[QNLM2016ORP0312]
WOS关键词	SOLID-PHASE EXTRACTION ; MULTIELEMENT DETERMINATION ; CARBON NANOTUBES ; GRAPHENE OXIDE ; DRINKING-WATER ; SAMPLES PRIOR ; CADMIUM ; PB ; BIOSORPTION ; REMOVAL
WOS研究方向	Science & Technology - Other Topics
语种	英语
出版者	ROYAL SOC
WOS记录号	WOS:000535930600001
资助机构	National Natural Science Foundation of China ; National Key Research and Development Program of China ; Chinese Academy of Sciences Instrument and Equipment Function Development Technology Innovation Project ; Anhui Provincial Excellent Youth Science Foundation of China ; Marine National Laboratory Open Foundation Program of China
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/103123]
专题	中国科学院合肥物质科学研究院
通讯作者	Zhao, Nanjing
作者单位	1.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Key Lab Environm Opt & Technol, Hefei 230031, Peoples R China 2.Key Lab Opt Monitoring Technol Environm, Hefei 230031, Anhui, Peoples R China 3.Univ Sci & Technol China, Hefei, Peoples R China
推荐引用方式 GB/T 7714	Gan, Tingting,Zhao, Nanjing,Yin, Gaofang,et al. Preconcentration with Chlorella vulgaris combined with energy dispersive X-ray fluorescence spectrometry for rapid determination of Cd in water[J]. ROYAL SOCIETY OPEN SCIENCE,2020,7.
APA	Gan, Tingting,Zhao, Nanjing,Yin, Gaofang,Chen, Min,Wang, Xiang,&Hua, Hui.(2020).Preconcentration with Chlorella vulgaris combined with energy dispersive X-ray fluorescence spectrometry for rapid determination of Cd in water.ROYAL SOCIETY OPEN SCIENCE,7.
MLA	Gan, Tingting,et al."Preconcentration with Chlorella vulgaris combined with energy dispersive X-ray fluorescence spectrometry for rapid determination of Cd in water".ROYAL SOCIETY OPEN SCIENCE 7(2020).