A visualization method for regional distribution of heavy metal content in tobacco leaves
A heavy metal and regional technology, applied in measuring devices, analyzing materials, material analysis through electromagnetic means, etc., can solve problems such as heavy detection tasks, difficult acquisition, complex data statistics, etc.
Active Publication Date: 2017-10-24
CHINA TOBACCO ZHEJIANG IND
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In the prior art, although there are literatures mentioning the recommended limit values of certain heavy metals in tobacco leaves, there is no literature on the evaluation method of heavy metal content in tobacco leaves. This is based on the large number of samples of tobacco leaf planting samples in the country, and all of them are obtained for comparison. Difficult. On the other hand, even if all the samples can be collected, the detection task is very heavy and the data statistics are extremely complicated.
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[0081] The visualization method of the regional distribution of heavy metal content in tobacco leaves of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0082] like figure 1 As shown, a visualization method for regional distribution of heavy metal content in tobacco leaves, including the following steps:
[0083] (1) In the tobacco leaf planting areas of major provinces across the country, using the county-level production area as a unit, use ICP-MS to detect the contents of various heavy metal elements in the tobacco leaves in each county-level production area;
[0084] Taking the routine procurement samples from 2011 to 2012 as an example, the heavy metal levels of 2,280 tobacco leaf samples from 114 county-level production areas in 12 provinces (including a municipality directly under the Central Government: Chongqing) were evaluated, and the tobacco leaf planting areas in each county-level production area were divide...
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The invention discloses a visualization method for the regional distribution of heavy metal content in tobacco leaves, which includes the following steps: (1) in the tobacco leaf planting area, using the county-level production area as a unit, using ICP-MS to detect the tobacco leaves in each county-level production area (2) Calculate the individual evaluation index of each heavy metal element content in each county-level production area; (3) Calculate the comprehensive evaluation index of heavy metal element content in each county-level production area; (4) The geostatistical distribution maps of single evaluation index and comprehensive evaluation index were drawn respectively, and the geographical distribution map of heavy metal elements was obtained. The present invention formulates appropriate individual evaluation indexes and comprehensive evaluation indexes of heavy metal content, and draws a geostatistical distribution map based on the individual evaluation indexes and comprehensive evaluation indexes, so as to intuitively and truly reflect the heavy metal levels of tobacco leaves in various regions, which is convenient for raw material purchase personnel and leaf tobacco. Group formulation personnel to inquire and judge.
Description
technical field [0001] The invention relates to the technical field of tobacco detection, in particular to a visualization method for regional distribution of heavy metal content in tobacco leaves. Background technique [0002] The development of modern industry and agriculture has caused the soil and atmospheric environment to be polluted by different types of heavy metals, and the degree of heavy metal pollution varies according to the region. [0003] Tobacco is a plant that is easy to absorb and enrich heavy metals. For tobacco itself, heavy metal pollution affects important physiological and biochemical indicators such as photosynthetic characteristics, enzyme activity, and protein and amino acid content of tobacco. When the concentration of heavy metals is too high, it is more likely to cause tobacco quality. with a severe drop in production. [0004] For the human body, heavy metals enter the human body through the mainstream smoke of cigarettes in the form of aeroso...
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IPC IPC(8): G01N27/62
Inventor 蒋佳磊斯文林垦朱书秀陆明华陈晓水汤晓东陆扬苏燕潘力
Owner CHINA TOBACCO ZHEJIANG IND