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2012•Journal of Xinyang Normal UniversityRequires access

Spectrophotometric Determination of Mercurry in Industrial Sewage

Bai Li-ming

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Abstract

The spetrophotometry analytical method of mercurry was developed based on the colour reaction of Hg(Ⅱ)-SCN——RhB system in the presence of β-cyclodextrin and polyvinyl alcohol in the medium of hydroloric acid.The maximum absorbance is at 580 nm with apparent molar absorption of 4.97 × 105 L·mol-1·cm-1.The beer's law is obeyed in the range of 0.03~0.4 mg/L.The regression equation of calibration is A=0.092ρ + 0.007 1 with a correlation coefficient 0.988 4.The proposed method was used to determine the trace mercurry in industrial sewage with satisfactory results.

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What this paper is about

The spetrophotometry analytical method of mercurry was developed based on the colour reaction of Hg(Ⅱ)-SCN——RhB system in the presence of β-cyclodextrin and polyvinyl alcohol in the medium of hydroloric acid.The maximum absorbance is at 580 nm with apparent molar absorption of 4.97 × 105 L·mol-1·cm-1.The beer's law is obeyed in the range of 0.03~0.4 mg/L.The regression equation of calibration is A=0.092ρ + 0.007 1 with a correlation coefficient 0.988 4.The proposed method was used to determine the trace mercurry in industrial sewage with satisfactory results.

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Available abstract

The spetrophotometry analytical method of mercurry was developed based on the colour reaction of Hg(Ⅱ)-SCN——RhB system in the presence of β-cyclodextrin and polyvinyl alcohol in the medium of hydroloric acid.The maximum absorbance is at 580 nm with apparent molar absorption of 4.97 × 105 L·mol-1·cm-1.The beer's law is obeyed in the range of 0.03~0.4 mg/L.The regression equation of calibration is A=0.092ρ + 0.007 1 with a correlation coefficient 0.988 4.The proposed method was used to determine the trace mercurry in industrial sewage with satisfactory results.

Key concepts: Absorbance, Polyvinyl alcohol, Chemistry, Molar absorptivity, Calibration curve, Analytical Chemistry (journal), TRACE (psycholinguistics), Correlation coefficient

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