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Method for detecting content of total dissolved solids in water

A technology for total dissolved solids and water detection. It is applied in the direction of removing certain components and weighing, etc., and can solve the problems to be improved.

Inactive Publication Date: 2018-03-09
INNER MONGOLIA MENGNIU DAIRY IND (GRP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, existing methods for detecting total dissolved solids in water still need to be improved

Method used

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  • Method for detecting content of total dissolved solids in water
  • Method for detecting content of total dissolved solids in water
  • Method for detecting content of total dissolved solids in water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] The first-grade water and third-grade water that meet the GB / T6682-2008 standard are used as the water bath, and the accuracy of the method of the present invention is verified according to the following methods. The results are shown in Tables 1 to 3:

[0056] (1) drying the evaporating dish in an oven to constant weight;

[0057] (2) filter the water sample to be tested and add it to the constant weight evaporating dish;

[0058] (3) the evaporating dish is placed in a water bath and dried to constant weight, so as to obtain a sample after evaporating to dryness, wherein the bottom of the evaporating dish contacts the water bath liquid surface;

[0059] Table 1 uses GB / T6682-2008 grade 3 water as the water bath and does not add the water sample to be tested into the evaporating dish

[0060]

[0061]

[0062] Table 2 uses GB / T6682-2008 first-grade water as the water bath and adds the above-mentioned first-grade water to the evaporating dish as the water sample ...

Embodiment 2

[0068] The method of GB / T5750.4-2006 and the following methods were used to detect the total dissolved solids content in a drinking water:

[0069] (1) drying the evaporating dish in an oven to constant weight;

[0070] (2) filter the drinking water to be tested and add it to the constant weight evaporating dish;

[0071] (3) the evaporating dish is placed in a water bath and dried to constant weight, so as to obtain a sample after evaporating to dryness, wherein the bottom of the evaporating dish contacts the water bath liquid surface, and the water bath water is GB / T6682-2008 grade 3 water;

[0072] (4) Determine the total dissolved solids content in the drinking water to be tested based on the following formula:

[0073] ρ=(m 3 -m 2 )×1000×1000 / V,

[0074] In the formula,

[0075] ρ is the total dissolved solid content in the water sample to be tested, the unit is mg / L,

[0076] m 3 is the mass of the evaporating dish placed in a water bath and dried to constant weig...

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PUM

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Abstract

The invention discloses a method for detecting content of total dissolved solids in water. The method comprises the following steps: putting an evaporation pan into a drying oven, and drying to achieve constant weight; filtering a to-be-detected water sample, adding into the evaporation pan subjected to constant weight treatment; putting the evaporation pan in water bath, evaporating to be dry, and then drying to achieve constant weight, thereby obtaining the sample evaporated to be dry conveniently, wherein the bottom of the evaporation pan is contacted with liquid level of the water bath; and determining the content of the total dissolved solids in the to-be-detected water sample based on mass of the sample evaporated to be dry. The method disclosed by the invention has the advantages that detection time can be obviously shortened, working efficiency can be improved, and detection result is accurate and credible.

Description

technical field [0001] The present invention relates to the field of food detection methods, in particular, the present invention relates to a method for detecting total dissolved solids content in water. Background technique [0002] After the water sample is filtered and dried at a certain temperature, the solid residue is called total dissolved solids, including non-volatile soluble salts, organic matter, and insoluble particles that can pass through the filter. [0003] Total dissolved solids in water seriously affect the quality of water. However, the existing methods for detecting total dissolved solids content in water still need to be improved. SUMMARY OF THE INVENTION [0004] The present invention is based on the inventors' findings on the following facts and problems: [0005] In the research of the method for detecting the total dissolved solids content in water, the inventor found that the current detection method mainly adopts GB / T5750.4-2006, which uses wa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N5/04
CPCG01N5/04
Inventor 宋鸽何娇王丽丽刘海旭丁勇宝李慧娟宋晓东常建军
Owner INNER MONGOLIA MENGNIU DAIRY IND (GRP) CO LTD