Colority and turbidity compensation determination method for ammonia nitrogen in distilled spirit industrial wastewater

A technology of industrial wastewater and measurement methods, which is applied in the direction of color/spectral characteristic measurement, measurement devices, and material analysis through optical means. It can solve the problems of long measurement time and low work efficiency, and overcome the influence of detection results. The effect of work efficiency

Inactive Publication Date: 2019-01-11
安徽润安信科检测科技有限公司
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Problems solved by technology

In the above two methods, the samples containing color and turbidity have been pret

Method used

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  • Colority and turbidity compensation determination method for ammonia nitrogen in distilled spirit industrial wastewater
  • Colority and turbidity compensation determination method for ammonia nitrogen in distilled spirit industrial wastewater
  • Colority and turbidity compensation determination method for ammonia nitrogen in distilled spirit industrial wastewater

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Embodiment Construction

[0028] 1 Reagents and materials

[0029] 1.1 Potassium sodium tartrate solution, ρ=500g / L.

[0030] Weigh 50.0g potassium sodium tartrate (KNaC 4 h 6 o 6 4H 2 O) Dissolve in 100mL of water, heat to boil to drive off ammonia, fully cool and dilute to 100mL.

[0031] 1.2 Nessler's reagent solution

[0032] Weigh 16.0g of sodium hydroxide (NaOH), dissolve it in 50mL of water, and cool to room temperature. Weigh 7.0g potassium iodide (KI) and 10.0g mercury iodide (HgI 2 ), dissolved in water, and then this solution was slowly added to the above 50mL sodium hydroxide solution under stirring, and diluted with water to 100mL. Store in polyethylene bottles, tightly closed with rubber stoppers or polyethylene caps, and stored in a dark place, valid for one year.

[0033] 1.3 Chromaticity-Turbidity Compensation Solution

[0034] Mix one volume of sodium hydroxide solution (160 g / L) and one volume of potassium sodium tartrate solution (1.1).

[0035] 1.4 Ammonia nitrogen standa...

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Abstract

The invention discloses a colority and turbidity compensation determination method for ammonia nitrogen in distilled spirit industrial wastewater. The method comprises the following steps: adopting Nessler reagent spectrophotometry, directly developing to determine the absorbance without pretreatment, preparing a blank sample, adding 2mL of colority-turbidity compensation liquid into the sample, and eliminating the colority or turbidity in the sample, wherein the potassium sodium tartrate and Nessler reagent solution are not added; and deducting the absorbance of the blank sample from the absorbance of the sample. The method is simple, convenient, accurate and reliable, and the requirement on timely regulation of the ammonia nitrogen treatment process in the distilled spirit industrial wastewater is met.

Description

technical field [0001] The invention relates to a chromaticity and turbidity compensation measurement method for ammonia nitrogen in liquor industrial wastewater, and belongs to the field of ammonia nitrogen measurement methods in wastewater. Background technique [0002] Ammonia nitrogen is one of the national water quality discharge indicators. It is required that the concentration of external drainage must meet the national discharge standard. Therefore, the content of ammonia nitrogen in each stage of water quality must be strictly controlled to ensure that the discharge of external drainage meets the standard. The determination methods of ammonia nitrogen include Nessler's reagent spectrophotometry, distillation-neutralization titration and so on. Nessler's reagent spectrophotometry stipulates that if the sample is turbid or colored, it can be treated by pre-distillation or flocculation precipitation, and then the color reaction of Nessler's reagent is carried out to me...

Claims

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Application Information

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IPC IPC(8): G01N21/31
CPCG01N21/31G01N2021/3185
Inventor 张良东汤有宏
Owner 安徽润安信科检测科技有限公司
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