Unlock instant, AI-driven research and patent intelligence for your innovation.

Heavy metal health risk assessment method and system in farmland system

A risk assessment and heavy metal technology, applied in the field of environmental health, can solve the problems of only considering the direct exposure route, underestimation of evaluation results, overestimation of evaluation results, etc.

Pending Publication Date: 2022-05-13
XIAMEN HUAXIA UNIV
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are some deficiencies in the early studies. On the one hand, when evaluating the health risks of heavy metals in farmland systems, only the direct exposure pathways of farmland soil or the food chain pathways of crops are considered, which may make the evaluation results underestimated; On the one hand, most studies conduct health risk assessments based on the total amount of heavy metals, but heavy metals are not completely absorbed when entering the human body, so the assessment results may be overestimated

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Heavy metal health risk assessment method and system in farmland system
  • Heavy metal health risk assessment method and system in farmland system
  • Heavy metal health risk assessment method and system in farmland system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] This embodiment discloses a health risk assessment method based on the "Heavy Metal Source-Bioavailability-Health Risk Assessment" (PMF-BA-HRA) model. figure 1 As shown, the method combines positive definite matrix factor analysis model (PMF), heavy metal bioavailability extraction (BA) (including simulated gastric juice extraction (SBET), simulated lung fluid extraction (SLF) and simulated sweat extraction ( SSFL)) and the health risk assessment model (HRA), can obtain the comprehensive health risk assessment of heavy metals in the farmland soil-rice system under different sources, and the contribution rate of each heavy metal source to the health risk. It is of great significance for health risk assessment and pollution prevention and control.

[0029] The method described in this embodiment includes the following steps:

[0030] S1. Samples of farmland soil and rice are collected respectively, and the samples are pretreated to obtain pretreated samples.

[0031] In...

Embodiment 2

[0138] This embodiment discloses a farmland soil-crop system heavy metal health risk assessment system based on the "Heavy Metal Source-Bioavailability-Health Risk Assessment" (PMF-BA-HRA) model, including:

[0139] The sample collection module is used to separately collect samples of farmland soil and crops.

[0140] The pretreatment module is used to perform corresponding pretreatment on samples of farmland soil and crops respectively.

[0141] The heavy metal detection module is used to detect the pretreated samples of farmland soil and crops respectively, and correspondingly obtain the content of heavy metals in farmland soil and crops.

[0142] The heavy metal source analysis module is used to analyze the source of heavy metals in farmland soil and crops according to the content of heavy metals in farmland soil and crops, and the contribution rate of heavy metal sources to the content of heavy metals.

[0143] The heavy metal source analysis module includes the PMF model...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a heavy metal health risk assessment method and system in a farmland system. The method comprises the following steps: collecting a sample of the farmland system; detecting the sample to obtain the content of heavy metals in the farmland system; analyzing a heavy metal source in the farmland system and the contribution rate of the heavy metal source to the content of the heavy metal according to the content of the heavy metal; detecting the bio-accessibility of the heavy metal; evaluating a first carcinogenic risk and a first non-carcinogenic risk of the heavy metal to residents, and a contribution rate of the heavy metal to the first carcinogenic risk and the first non-carcinogenic risk; and evaluating a second carcinogenic risk and a second non-carcinogenic risk of the heavy metal source to the resident, and a contribution rate of the heavy metal source to the second carcinogenic risk and the second non-carcinogenic risk. The heavy metal sources in the farmland system are analyzed, the carcinogenic risk and the non-carcinogenic risk generated by each heavy metal source are evaluated, and the health risk of the heavy metal in the farmland system is evaluated more accurately and truly.

Description

technical field [0001] The invention relates to the field of environmental health, in particular to a method and system for assessing health risks of heavy metals in farmland systems. Background technique [0002] The health risks of heavy metals in agricultural systems to humans is a research hotspot. Heavy metals that enter the human body can cause harm to the human body. For example, studies have pointed out that when the human body ingests excessive cadmium and lead, it may cause neurological disorders or kidney failure. For the non-carcinogenic and carcinogenic risks of heavy metals to the human body, the United States Environmental Protection Agency (USEPA) has related assessment models. However, there are some deficiencies in the early studies. On the one hand, when evaluating the health risks of heavy metals in farmland systems, only the direct exposure pathways of farmland soil or the food chain pathways of crops are considered, which may make the evaluation result...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/626G01N21/64G01N1/44G01N1/38G01N1/34G01N1/28G16H50/30
CPCG01N27/626G01N21/6404G01N21/6428G01N21/643G01N1/286G01N1/34G01N1/38G01N1/44G16H50/30
Inventor 林承奇黄华斌王燕云郝春莉王雯琦
Owner XIAMEN HUAXIA UNIV