期刊
TALANTA
卷 166, 期 -, 页码 369-374出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.talanta.2016.01.052
关键词
Multi-reverse flow injection analysis; Multi-optical sensor; Heavy metals; Natural waters; Green analytical chemistry
资金
- Higher Education Research Promotion, Thailand, Office of the Higher Education Commission
- Thailand, Thailand Research Funds [MRG 5380237]
- Thammasat University, Thailand
Multi-reverse flow injection analysis (Mr-FIA) integrated with multi-optical sensor was developed and optimized for the simultaneous determination of multi ions; Mn(II), Fe(II), Cu(II) and Fe(III) in water samples. The sample/standard solutions were propelled making use of a four channels peristaltic pump whereas 4 colorimetric reagents specific for the metal ions were separately injected in sample streams using multi-syringe pump. The color zones that formed in the individual mixing coils were then streamed into multi-channels spectrometer, which comprised of four flows through cell and four pairs of light emitting diode and photodiode, whereby signals were measured concurrently. The linearity range (along with detection limit, mu g L-1) was 0.050-3.0(16), 030-2.0 (11), 0.050-1.0(12) and 0.10-1.0 (50) mg L-1, for Mn(II), Fe(II), Cu(II) and Fe(III), respectively. In the interim, the correlation coefficients were 0.9924-0.9942. The percentages relative standard deviation was less than 3. The proposed system was applied successfully to determine targeted metal ions simultaneously in natural water with high sample throughput and low reagent consumption, thus it satisfies the criteria of Green Analytical Chemistry (GAC) and its goals. (C) 2016 Elsevier B.V. All rights reserved.
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