NDLI: Ultra-sensitive spectrophotometric determination of nickel after complexation and membrane filtration

Content Provider	Springer Nature Link
Author	Iqbal, Jibran Yin, Changhai Geng, Jinpei Li, Xiaoyu Li, Xiuyong Du, Yiping Liu, Bing Xiang
Copyright Year	2012
Abstract	We report on a simple, sensitive and selective method for the spectrophotometric determination of Ni2+ in water samples. The analyte ions were collected on a membrane filter in the form of their red complex with 1-(2-pyridylazo)-2-naphthol (PAN), and the absorption spectra of the colored membrane filters were acquired. Effects of pH value, sample volume, and amount of PAN were examined in order to optimize sensitivity. The interference by common other ions was eliminated using appropriate masking agents. The absorbance is linearly related to the concentration of Ni2+ in the ranges from 0.3 to 1.5 μg L−1, and from 2 to 10 μg L−1, respectively, the correlation coefficients (R2) being 0.9871 and 0.9954. Under the optimal conditions, the detection limit is 0.1 μg L−1. The recoveries in case of spiked samples are between 95.0% and 101.5%, and the relative standard deviations range from 2.8% to 4.1%. Figure Direct ultra-sensitive spectrophotometric determination of Ni2+ as Ni-PAN complex on membrane filters
Starting Page	195
Ending Page	200
Page Count	6
File Format	PDF
ISSN	00263672
Journal	Microchimica Acta
Volume Number	177
Issue Number	1-2
e-ISSN	14365073
Language	English
Publisher	Springer Vienna
Publisher Date	2012-02-15
Publisher Place	Vienna
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Spectrophotometry Nickel (Ni2+) determination Membrane filtration 1-(2-pyridylazo)-2-naphthol (PAN) Real water samples Nanotechnology Characterization and Evaluation of Materials Nanochemistry Microengineering Analytical Chemistry
Content Type	Text
Resource Type	Article
Subject	Analytical Chemistry

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