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Detection reagent combination of total phosphorus on-line analyzer and determination method for total phosphorus content of water sample

A technology for detecting reagents and analyzers, applied in the field of chemical analysis, which can solve the problems of high price, deterioration of the whole barrel of reagents, temperature sensitivity of additives, etc., and achieve the effect of easy storage, strong versatility and good stability

Inactive Publication Date: 2018-06-01
深圳市长协新能源科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, different brands of total phosphorus automatic analyzers in the prior art often need to purchase original imported reagents, which are not only expensive, but also the additives of the original imported reagents are very sensitive to temperature and must be refrigerated
No matter whether the opened additive is used or not, it will become invalid after the expiration date, which is very easy to cause waste; and after opening the additive, if there is a power outage or the refrigerator does not cool during use, it is very easy to cause the whole barrel of reagents to deteriorate or even become invalid.

Method used

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  • Detection reagent combination of total phosphorus on-line analyzer and determination method for total phosphorus content of water sample
  • Detection reagent combination of total phosphorus on-line analyzer and determination method for total phosphorus content of water sample
  • Detection reagent combination of total phosphorus on-line analyzer and determination method for total phosphorus content of water sample

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Embodiment 1

[0028] A detection reagent combination of a total phosphorus online analyzer comprises a first reagent, a second reagent and a third reagent, the first reagent containing potassium persulfate with a concentration of 32.5g / L; the second reagent containing a concentration of 20g / L of ascorbic acid; the third reagent contains concentrated sulfuric acid with a concentration of 100mL / L, molybdate with a concentration of 22g / L and potassium antimony tartrate with a concentration of 0.3g / L.

[0029] The configuration of the detection reagent combination of the total phosphorus online analyzer of the present embodiment is as follows:

[0030] Configuration of the first reagent: 32.5 g of potassium persulfate was weighed and dissolved in 1 L of deionized water to prepare the first reagent containing 32.5 g / L of potassium persulfate.

[0031] Configuration of the second reagent: 20 g of ascorbic acid was weighed and dissolved in 1 L of deionized water to prepare a second reagent contai...

Embodiment 2

[0037] A detection reagent combination of a total phosphorus online analyzer comprises a first reagent, a second reagent and a third reagent, the first reagent containing potassium persulfate with a concentration of 37.5g / L; the second reagent containing a concentration of 22g / L of ascorbic acid; the third reagent contains concentrated sulfuric acid with a concentration of 110mL / L, molybdate with a concentration of 24g / L and potassium antimony tartrate with a concentration of 0.35g / L.

[0038] The configuration of the detection reagent combination of the total phosphorus online analyzer of the present embodiment is as follows:

[0039] Configuration of the first reagent: 37.5 g of potassium persulfate was weighed and dissolved in 1 L of deionized water to prepare the first reagent containing 37.5 g / L of potassium persulfate.

[0040] Configuration of the second reagent: 22 g of ascorbic acid was weighed and dissolved in 1 L of deionized water to prepare a second reagent conta...

Embodiment 3

[0046] A detection reagent combination of a total phosphorus online analyzer comprises a first reagent, a second reagent and a third reagent, the first reagent containing potassium persulfate with a concentration of 40g / L; the second reagent containing a concentration of 25g / L L of ascorbic acid; the third reagent contains concentrated sulfuric acid with a concentration of 115mL / L, molybdate with a concentration of 26g / L and potassium antimony tartrate with a concentration of 0.4g / L.

[0047] The configuration of the detection reagent combination of the total phosphorus online analyzer of the present embodiment is as follows:

[0048] Configuration of the first reagent: 40 g of potassium persulfate was weighed and dissolved in 1 L of deionized water to prepare the first reagent containing 40 g / L of potassium persulfate.

[0049] Configuration of the second reagent: 25 g of ascorbic acid was weighed and dissolved in 1 L of deionized water to prepare a second reagent containing ...

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Abstract

The invention discloses a detection reagent combination of a total phosphorus on-line analyzer and a determination method for the total phosphorus content of a water sample. Specifically, the detection reagent combination of a total phosphorus on-line analyzer is suitable for molybdate spectrophotometry, and includes a first reagent, a second reagent and a third reagent, and the first reagent contains 32.5-40g / L potassium persulfate, the second reagent contains 20-25g / L ascorbic acid, and the third reagent contains 100-115mL / L concentrated sulfuric acid, 22-26g / L molybdate and 0.3-0.4g / L antimony potassium tartrate. The detection reagent combination provided by the technical scheme adopted by the invention has the characteristics of easy storage, good stability and strong universality, andcan be applicable to total phosphorus automatic analyzers of different brands.

Description

technical field [0001] The invention relates to the technical field of chemical analysis, in particular to a detection reagent combination of a total phosphorus online analyzer and a method for determining the content of total phosphorus in a water sample. Background technique [0002] The methods for measuring total phosphorus content in existing water samples include laboratory manual analysis and automatic online analysis; wherein, the method for manual analysis of total phosphorus content in water samples in the laboratory usually adopts gravimetric method, titration method, and spectrophotometric method; and Total phosphorus automatic online analyzers include: Hach Sigma total phosphorus online analyzer, HORIBA total phosphorus online analyzer, Zhengqi WQ-1000 total phosphorus online analyzer, Shimadzu TNP-4110 total phosphorus online analyzer and so on. The total phosphorus automatic analyzer has the characteristics of fast analysis speed and good reproducibility, and ...

Claims

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Application Information

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IPC IPC(8): G01N21/31G01N21/78G01N1/28G01N1/30G01N1/44G01N35/00
CPCG01N21/31G01N1/28G01N1/30G01N1/44G01N21/78G01N35/00G01N2001/302
Inventor 罗澍梁鸿唐力张明棣侯化明陈慧明冯献芳何龙周波王志杰陈德华杨小妮
Owner 深圳市长协新能源科技有限公司
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