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- W2372242717 abstract "In the present paper,chrysin has strong absorption in the ultraviolet region. The absorbance of chrysin could be significantly inhibited with the addition of copper ions. And the reduction of the absorbance was linear with the concentration of copper ions. Based on this,a new analytical method for the determination of Cu2 +was established by the ultraviolet spectroscopy. Some important parameters such as buffer solution volume,p H and the concentration of chrysin were optimized. In the range of 4. 0 × 10-8mol / L ~ 1. 0 × 10-6mol / L,it was found that the reduction of the absorbance was in proportion to the concentration of Cu2 +in p H 8. 28,9. 0 ×10-2mol / L HMTA-HCl buffer solution. The linear equation was ΔA = 0. 508 c-0. 0147( 10-6mol / L)( R =0. 99604). The detection limit of this method( S / N = 7) was 7. 08 × 10-9mol / L. The relative standard derivation was 4. 0% for 4. 0 × 10-8mol / L copper. In addition,the copper in the printed circuit board wasted water was measured by using this method. The results by using this method were consistent with those by the titration method of EDTA." @default.
- W2372242717 created "2016-06-24" @default.
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- W2372242717 date "2015-01-01" @default.
- W2372242717 modified "2023-09-23" @default.
- W2372242717 title "Determination of copper in printed circuit board wastewater by ultraviolet spectroscopy" @default.
- W2372242717 hasPublicationYear "2015" @default.
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