Journal
FOOD CHEMISTRY
Volume 221, Issue -, Pages 541-547Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2016.11.141
Keywords
Wide-range determination; Light addressable potentiometric sensor; Specific sensing
Funding
- National Science and Technology Support Program [2015BAD19B03]
- Jiangsu University [16JDG026]
- Jiangsu Postdoctoral Funding [1601053A]
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A rapid and wide-range method, based on light addressable potentiometric sensor (LAPS), is introduced into determination of Cd(II), Pb(II), Cu(II) and Hg(II) in fish tissues. A compact LAPS module is prepared by integrating four LAPS chips specifically sensitive to target elements. Its responses in digestions from various settings are investigated to find suitable factors. Analytical properties of this method are evaluated in consequent experiments under optimized conditions. Measurement range for each target element exceeds 0.1 to 1000 mg L (1), and response time is less than 10 s. Accuracy, precision and selectivity of the proposed method are also well defined in measurements. It is successively performed to detect the target elements in real fish samples from 4 species, and obtained results are consistent with certified method. (C) 2016 Elsevier Ltd. All rights reserved.
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