Method for assessing the quality of dust adhering to human hands by means of a standard curve

A standard curve, hand technology, applied in measurement devices, instruments, particle and sedimentation analysis, etc., can solve the problem of not directly estimating the quality of human hand dust, achieve accurate and reliable measurement methods and data, broad scientific research application prospects, The effect of accurate measurement

Active Publication Date: 2022-03-25
HENAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the fact that there is no method for directly estimating the quality of dust on human hands, the present invention provides a method for evaluating the quality of dust attached to human hands through a standard curve

Method used

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  • Method for assessing the quality of dust adhering to human hands by means of a standard curve
  • Method for assessing the quality of dust adhering to human hands by means of a standard curve
  • Method for assessing the quality of dust adhering to human hands by means of a standard curve

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Experimental program
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Embodiment 1

[0019] Embodiment 1: This embodiment provides a method for evaluating the quality of dust attached to human hands through a standard curve, including the following steps:

[0020] Step1. Sample collection: In a university in Xinxiang, 38 boys and 37 girls aged 18-24 were selected as the sample group of college students; 25 male staff and 21 female staff were selected as work in the office area around the school Crowd sampling object group; at the same time, 52 boys and 55 girls aged 4-10 were selected as the children sampling object group in the parks and squares around the school; each group of sampling objects was required not to clean their hands 2 hours before sampling After 2 hours, rinse the hands of the sampling subject with 100ml of distilled water. During the rinsing, the sampling subject constantly rubs the hands, and collects the washed water in a clean and transparent PET plastic bottle;

[0021] Step 2. Make a standard curve: collect a soil sample of no less than ...

Embodiment 2

[0025] Example 2: The sampling in this example and Example 1 is carried out in the same area, both in the periphery of a university in Xinxiang, and the sampling area is the shopping mall (that is, the commercial ground) and the residential area (that is, the residential area) around the university. ground) and parks (that is, the bare ground area), the experimental group randomly selected sampling objects in three areas, including 43 people in the sampling object group in the commercial area, 35 people in the sampling object group in the residential area, and 35 people in the sampling object group in the bare land area. There are 51 people. Each group of sampling subjects did not clean their hands 2 hours before sampling. After 2 hours, the hands of the sampling subjects were washed with 100 ml of distilled water. During the rinsing, the sampling subjects rubbed their hands continuously, and collected the washed water in clean and transparent PET. In the plastic bottle, the tr...

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Abstract

The present invention relates to the technical field of dust quality evaluation methods, in particular to a method for evaluating the quality of dust attached to human hands through a standard curve; the method calculates the dust quality of human hands by making a standard curve, which fills the gap that cannot be directly obtained at present. There is a vacancy in the method for estimating the quality of dust on human hands. The whole method is simple and easy to operate. Strict quality control is maintained during the whole process of sample processing to ensure the accuracy and reliability of measurement methods and data, so that the quality of dust on human hands can be estimated. Accurate measurement has a wide range of scientific research application prospects.

Description

technical field [0001] The invention belongs to the technical field of dust quality assessment methods, and in particular relates to a method for assessing the quality of dust attached to human hands through a standard curve. Background technique: [0002] Dust is a complex mixture of natural and man-made substances, and while dust is often viewed as a simple nuisance, it is a repository for numerous environmental pollutants; human exposure to dust and toxic chemicals in soil is a modern Of great concern to society, hand-to-mouth contact and dust ingestion are considered important and even major routes of human exposure to various pollutants such as flame retardants. [0003] However, very little is known about the quality characteristics of dust attached to hands, especially in Asia, and several recent studies have mentioned improper collection and preparation of dust / soil samples and inaccurate use of dust uptake rates , which can lead to considerable error in estimates o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N15/02
CPCG01N15/0205
Inventor 曹治国王萌萌苗正董夏妍节建业王志宇沈方方张玲李逍逍李常贺
Owner HENAN NORMAL UNIV
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