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Method for evaluating quality of dust attached to hands of human body through standard curve

A standard curve, hand technology, applied in the direction of measuring devices, instruments, particle size analysis, etc., can solve the problem of not directly estimating the quality of human hand dust, to achieve accurate and reliable measurement methods and data, accurate measurement, and extensive scientific research application prospects Effect

Active Publication Date: 2019-11-05
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 evaluating quality of dust attached to hands of human body through standard curve
  • Method for evaluating quality of dust attached to hands of human body through standard curve
  • Method for evaluating quality of dust attached to hands of human body through standard curve

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Experimental program
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Effect test

Embodiment 1

[0019] Embodiment 1: the present embodiment provides a kind of method that is attached to the quality of dust on human hands by standard curve evaluation, comprises the following steps:

[0020] Step1. Sample collection: 38 boys and 37 girls aged 18-24 were selected in a university in Xinxiang as the sampling target group for college students; 25 male staff members and 21 female staff members were selected as the working group 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 in the parks and squares around the school as the children sampling object group; 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, rub the hands of the sampling subject continuously during washing, and collect the washed water in a clean and transparent PET plastic bottle;

[0021] Step2. Make a stan...

Embodiment 2

[0025] Example 2: The sampling in this example and Example 1 is carried out in the same area, all around a certain university in Xinxiang, and the sampling area is a shopping mall (that is, a commercial ground) and a residential area (that is, a residential area) around the university. ground) and parks (Bare ground), the experimental team randomly selected sampling objects in three areas, among which the sampling object group in the commercial area was 43 persons, the sampling object group in the residential area was 35 persons, and the sampling object group in the bare land area For 51 people, each group of sampling subjects did not clean their hands 2 hours before sampling, and rinsed the hands of sampling subjects with 100ml distilled water after 2 hours. During washing, the sampling subjects rubbed their hands continuously, and collected the washed water in clean and transparent PET In the plastic bottle, utilize the laser particle size analyzer to measure the transmittanc...

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Abstract

The invention relates to the technical field of dust quality evaluation methods, in particular to a method for evaluating quality of dust attached to the hands of the human body through a standard curve. According to the method, the quality of the dust on the hands of the human body is calculated by making the standard curve, which fills a vacancy of no method for directly evaluating the quality of the dust on the hands of the human body at present; the whole method is simple, convenient and easy to operate, the strict quality control is kept in the whole process of sample treatment, the accuracy and reliability of the measurement method and data are ensured so that the dust on the hands of the human body can be accurately measured, and the method has wide application prospects in scientific research.

Description

technical field [0001] The invention belongs to the technical field of dust quality evaluation methods, and in particular relates to a method for evaluating the quality of dust attached to human hands through a standard curve. Background technique: [0002] Dust is a complex mixture of natural and anthropogenic substances, and while dust is often viewed as a simple nuisance, it is a reservoir of numerous environmental pollutants; human exposure to toxic chemicals in dust and soil is a modern A matter of great concern to society, hand-to-mouth contact and dust ingestion are considered to be important or even major routes of human exposure to various pollutants such as flame retardants. [0003] However, the quality characteristics of dust attached to hands are poorly understood, especially in Asia, where several recent studies have mentioned poor collection and preparation of dust / soil samples and inaccurate use of dust uptake rates , may lead to considerable error in the es...

Claims

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Application Information

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Patent Type & Authority Applications(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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