干旱区生态环境知识资源中心(Arid): Field Determination of Phosphate in Environmental Water by Using a Hand-Powered Paper Centrifuge for Preconcentration and Digital Image Colorimetric Sensing

Arid

DOI	10.1155/2022/7359197
	Field Determination of Phosphate in Environmental Water by Using a Hand-Powered Paper Centrifuge for Preconcentration and Digital Image Colorimetric Sensing
	Pan, Zhen; Nong, Xiaozhan; Xie, Yajing; Li, Yan; Zeng, Hui; Liang, Ying; Zhang, Min
通讯作者	Zeng, H ; Zhang, M
来源期刊	JOURNAL OF ANALYTICAL METHODS IN CHEMISTRY
ISSN	2090-8865
EISSN	2090-8873
出版年	2022
卷号	2022
英文摘要	Phosphate concentration in natural water has been used as a water quality indicator, as it is one of the major nutrients for aquatic plants. However, the traditional phosphomolybdenum blue (PMB) method has limited sensitivity for visual or camera-based detection, leading to underestimation of the phosphate concentration. We present an ultralow-cost, rapid field preconcentration and digital image colorimetric sensing of low-concentration phosphate method for water analysis. A novel hand-powered paper centrifuge (paperfuge) is used for sample preparation and preconcentration. This paperfuge is made of two circular paper discs and a string. Six centrifuge tubes (CTs) originally used as glue dispensing tips with a sample capacity of similar to 230 mu L, are loaded on the paperfuge. After sampling, phosphate in the water sample is reacted to form PMB. Then, the reacted sample is drawn into a CT using an autopipette before the CT bottom is sealed by glue. After Oasis (R) HLB sorbents are added through the top of the CT, the CT top is also sealed with glue. The HLB sorbents adsorb PMB and are accumulated in the CT tip through centrifugation. The CT tips are cut and analyzed with the ImageJ software. It was found that the blue color intensity of sorbents is in a linear relationship to the phosphate concentration, with a linear range of 0-5 mu M (r(2) = 0.9921) and limit of detection of 0.19 mu M. In addition, this method has been applied to in-field water analysis. The results are in agreement with the standard PMB method.
类型	Article
语种	英语
开放获取类型	Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:000766915000002
WOS关键词	DISSOLVED REACTIVE PHOSPHORUS ; SOLID-PHASE EXTRACTION ; INJECTION-ANALYSIS ; SEAWATER ; COPRECIPITATION ; ORTHOPHOSPHATE
WOS类目	Chemistry, Analytical
WOS研究方向	Chemistry
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/393279
推荐引用方式 GB/T 7714	Pan, Zhen,Nong, Xiaozhan,Xie, Yajing,et al. Field Determination of Phosphate in Environmental Water by Using a Hand-Powered Paper Centrifuge for Preconcentration and Digital Image Colorimetric Sensing[J],2022,2022.
APA	Pan, Zhen.,Nong, Xiaozhan.,Xie, Yajing.,Li, Yan.,Zeng, Hui.,...&Zhang, Min.(2022).Field Determination of Phosphate in Environmental Water by Using a Hand-Powered Paper Centrifuge for Preconcentration and Digital Image Colorimetric Sensing.JOURNAL OF ANALYTICAL METHODS IN CHEMISTRY,2022.
MLA	Pan, Zhen,et al."Field Determination of Phosphate in Environmental Water by Using a Hand-Powered Paper Centrifuge for Preconcentration and Digital Image Colorimetric Sensing".JOURNAL OF ANALYTICAL METHODS IN CHEMISTRY 2022(2022).