Method for analyzing tiny particles in drinking water

An analysis method and drinking water technology, which are applied in the direction of material analysis, analysis material, and measuring device using wave/particle radiation, which can solve problems such as human injury, and achieve the effects of easy sampling, accurate analysis results, and simple operation.

Inactive Publication Date: 2019-01-22
深圳市美信检测技术股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the continuous improvement of people's quality of life, the quality requirements for drinking water are also getting higher and higher. For example, there may be some tiny organic particles and t

Method used

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  • Method for analyzing tiny particles in drinking water
  • Method for analyzing tiny particles in drinking water
  • Method for analyzing tiny particles in drinking water

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0051] Example 1

[0052] step 1:

[0053] Dissolve Nile Red in acetone;

[0054] Step 2:

[0055] Divide bottled water of three different brands of X, Y, Z into three parts: each part is dyed with Nile Red;

[0056] Step 3:

[0057] Filter the three types of bottled water after Nile Red dyeing;

[0058] Step 4:

[0059] Micro-infrared analysis of the filtered particles, scanning electron microscope + X-ray energy spectrometer analysis;

[0060] Step 5:

[0061] Perform component analysis and classification of the particulate matter after component analysis, and analyze possible sources.

[0062] The analysis results are shown in Table 1.

[0063] Table 1 Particle size analysis

[0064]

[0065]

[0066] The micro-infrared test results of the samples are shown in Table 2.

[0067] Table 2 Micro-infrared analysis results

[0068] X

[0069] Result analysis:

[0070] Polyester fiber, carbon black, metal oxide and polyisoprene were found in X bottled water. Y contains inorganic salt, acrylonitrile...

Example Embodiment

[0090] Example 2

[0091] Step 1: Pour Nile Red powder into acetone to dissolve it to prepare a solution with a concentration of Nile Red of 0.1 mg / mL; prepare the filter membrane, clean it and analyze it under the microscope. If there are particles that affect the analysis results, continue to clean and clean. The filter membrane is placed in a clean petri dish.

[0092] Step 2: Filter 10 mL of acetone solution and 10 mL of Nile Red solution on a 1 μm filter membrane, respectively, and analyze particles and components.

[0093] Step 3: Pour the Nile Red solution into the pressure tank of the spray gun, filter through the built-in 0.45μm filter membrane of the filter gun, collect 10mL filtrate and filter it on the 1μm filter membrane, analyze the particles and components; (blank test)

[0094] Step 4: Prepare water samples a, b, c, d, e, 1.5L / bottle, 2 bottles each; clean the outer wall of the bottle with deionized water filtered by a 0.45μm filter membrane before testing to avoid int...

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Abstract

The invention provides a method for analyzing tiny particles in drinking water. The method for analyzing the tiny particles in the drinking water comprises the following steps of A: dyeing a drinkingwater sample by using Nile red, then performing filtering, and collecting the tiny particles on filter paper; and B, detecting and analyzing chemical components of the tiny particles by adopting an FTIR infrared spectrometer, a scanning electron microscope and an X-ray spectrometer. According to the analysis method, the chemical components of the tiny particles in the water can be identified; thecontent of the chemical components can be qualitatively or semi-quantitatively analyzed; an analysis result is accurate; and sampling is easy.

Description

Technical field [0001] The invention relates to the field of water quality monitoring, in particular to an analysis method of particulates in drinking water. Background technique [0002] The current testing methods for drinking water include: activated carbon filtration method, repeated permeation filtration method, manganese sand filtration method, ozone sterilization method, aeration method and ultraviolet sterilization method. The current drinking water purification methods are mostly a combination of the above physical, chemical or biological methods. [0003] The current testing indicators for drinking water are: ① Sensory requirements: including color, turbidity, odor and visible objects; ② Quality physical and chemical indicators: including PH value, electrical conductivity, potassium permanganate consumption and chloride; ③ Pollution Physical and chemical indicators: including lead, arsenic, copper, cyanide, volatile phenols, free chlorine, chloroform, carbon tetrachlorid...

Claims

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Application Information

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IPC IPC(8): G01N15/00G01N21/35G01N23/2206
CPCG01N15/00G01N21/35G01N23/2206G01N2223/1016
Inventor 杨振英康立彭璟邓伟李蒙吴世霖韦乔
Owner 深圳市美信检测技术股份有限公司
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