CN107978368A - A kind of heavy metal health risk assessment method in depositing dust based on metal SBET - Google Patents
A kind of heavy metal health risk assessment method in depositing dust based on metal SBET Download PDFInfo
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- 229910001385 heavy metal Inorganic materials 0.000 title claims abstract description 95
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- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000012502 risk assessment Methods 0.000 title claims abstract description 20
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Abstract
Heavy metal health risk assessment method in a kind of depositing dust based on metal SBET provided by the invention, belong to health risk assessment technology field, first depositing dust in air is sampled and pre-processed, according to food intake, depositing dust sample is divided into three groups by the dust diameter that breathing suction and three kinds of approach of skin contact enter human body, the calculating of heavy metal total content concentration and the extraction of bioavailability of heavy metals are carried out to it respectively, the calculating of heavy metal reconditioning is first carried out according to obtained data, then the health risk for entering human body to the heavy metal in three kinds of approach respectively is assessed.In short, the present invention provides the small methods of risk assessment of a kind of easy to operate, assessment science, error, assessment prevention is carried out to the carcinogenic risk of heavy metal in depositing dust for people.
Description
Technical Field
The invention belongs to the technical field of health risk assessment, and particularly relates to a metal SBET-based method for assessing the health risk of heavy metals in dust fall.
Background
The atmospheric dustfall is a general term for atmospheric particulates suspended in the atmosphere and falling to the ground surface under the action of factors such as gravity, precipitation, turbulence and the like, comprises an inhomogeneous mixture of inorganic nonmetallic particles, metal particles and organic particles, is an important link for connecting multiple media such as atmosphere, soil, water and the like, and is an environmental factor closely combined with human relation. Heavy metals are difficult to degrade, can be remained in the environment for a long time, and are easy to generate enrichment effect and generate toxicity to animals, plants and human bodies through a food chain system. Various heavy metals in the dustfall are as follows: lead, chromium, arsenic, copper, zinc, nickel and the like mainly come from industrial pollution, traffic pollution, building dust and the like, can enter animals and plants through media such as water, atmosphere, soil and the like to influence the ecological system and the environmental safety, and can enter human bodies through ways such as oral ingestion, breath inhalation, skin contact and the like to generate potential harm to the health of the human bodies.
The bioavailability (bioavailability) of heavy metals refers to the property that heavy metals can be absorbed by organisms or generate toxicity to organisms, and is a key index for measuring the health influence and ecological influence of heavy metal elements. The risk assessment of heavy metals in the environment is a prerequisite for the risk management thereof. In recent years, health risk assessment is performed on heavy metals in atmospheric dustfall by a plurality of scholars, but the model is mainly focused on the assessment of the total content of the heavy metals during application, and the biological effectiveness of the heavy metals is not considered, so that errors in the estimation of the exposure dose of the heavy metals in the health risk assessment are caused, and an important source of uncertainty of the health risk assessment model is also caused.
Disclosure of Invention
The invention provides a method for evaluating the health risk of heavy metal in dust fall based on metal SBET, which aims at solving the technical problems that sampling in the evaluation of the health risk of heavy metal in atmospheric dust fall is not standard, the steps for extracting the bioavailability of heavy metal are too simple and the like in the prior art.
The technical scheme of the invention is as follows: a health risk assessment method for heavy metals in dustfall based on metal SBET comprises the following steps:
collecting atmospheric dust fall in sunny and calm weather by adopting a sweeping method, screening out large-particle impurities in the atmospheric dust fall, naturally drying the impurities, and screening out the dust fall with the particle size of less than 63 mu m for heavy metal analysis;
weighing 0.2g of dust fall sample, adding 8.0mL of concentrated nitric acid and 2.0mL of perchloric acid, heating at 50 ℃ for 3 hours, heating at 75 ℃ for 1 hour, heating at 100 ℃ for 1 hour, heating at 125 ℃ for 1 hour, heating at 150 ℃ for 3 hours, heating at 175 ℃ for 2 hours, heating at 190 ℃ for 3 hours for nearly drying, cooling, adding 5% of dilute nitric acid, centrifuging, taking supernatant, and testing the concentration of various heavy metals in the supernatant by using Inductively coupled plasma mass spectrometry (ICP-MS);
step three, weighing 0.2g of dust fall sample for extracting the biological effectiveness, wherein the specific operation method comprises the following steps:
(1) First, 2L of glycine extract was prepared: weighing 60.056g of glycine, adding 1400-1600ml of deionized water for dissolving, dropwise adding HCl while adding deionized water until the total volume reaches 2L;
(2) Weighing 0.2g of dustfall sample, adding 25ml of extracting solution, fully oscillating for 1-1.5 hours at 37 ℃ to ensure that heavy metal in dustfall fully reacts with the glycine extracting solution, and testing the pH value of the extracting solution after reaction to be 1.0-2.0, otherwise, oscillating and reacting again;
(3) Centrifuging the reaction mixture at 4000rpm for 15 minutes, passing the centrifuged supernatant through an acetate fiber filter membrane, taking the filtered solution for heavy metal determination, wherein the determined content is the content C of the heavy metal biological effective part SBET Calculating the contribution rate (bioavailability%) of the bioavailability of the heavy metal in the total amount of the heavy metal;
step four, heavy metals in the dustfall mainly enter a human body through three ways of direct oral ingestion, respiratory inhalation and skin contact, and according to the United states EPA human body exposure risk assessment method, a health risk calculation model is as follows:
(1) Exposure dose calculation method, as follows:
wherein D is ing Average daily exposure for the food intake route, D inh Mean daily exposure for the respiratory inhalation route, D dermal The daily average exposure for skin contact, and the lifetime daily average exposure for inhalation of carcinogenic heavy metals in mg (kg. D) -1 (ii) a C is the concentration of the total content of the measured dustfall heavy metal, and the unit is mg.kg -1 (ii) a The bioavailability% is the proportion of the heavy metal effectiveness in the total amount; ingR is the dust-fall frequency of oral food intake, and the unit is mg/d; inhR is the dustfall frequency of the inhaled air through breathing, and the unit is m 3 D; EF is the exposure frequency; ED is exposure age; SL is skin adhesion in mg/cm 2 (ii) a SA is the exposed skin surface area in cm 2 (ii) a ABS is a skin absorption factor; PEF is an atmospheric dust reduction production factor; BW is mean body weight; AT is a non-carcinogenic risk;
(2) The method for calculating the health risk of different exposure ways of heavy metals in dustfall is as follows:
HQ＝D/R f D 0
HI＝∑HQ＝HQ ing +HQ inh +HQ dermal
Risk＝LADD×SF 0
Total Risk＝∑Risk＝Risk ing +Risk inh +Risk dermal
wherein, HQ is a non-carcinogenic risk quotient which represents the non-carcinogenic risk of a single pollutant through a certain path; HQ ing 、HQ inh 、HQ dermal The non-carcinogenic health risks to human bodies are generated by heavy metals in the dustfall through three ways of food intake, breath inhalation and skin contact; HI is the total non-carcinogenic health risk to a human body by three pathways; r f D 0 Reference dose for daily exposure to health risks in mg (kg. D) -1 The maximum amount of pollutants which can not cause adverse reactions to human bodies and are taken by each kg of human bodies every day is shown; when HQ and HI are less than or equal to 1.0, the heavy metals are considered to have less or no obvious harm to the non-carcinogenic health risk of the human body; when HQ and HI are more than 1.0, considering that heavy metals have non-carcinogenic risks and possibly cause harm to human bodies; slope coefficient SF 0 The maximum probability of carcinogenic effect of human body exposed to a certain pollutant with a certain dosage is expressed in mg (kg. D) -1 (ii) a Risk is an oncogenic Risk and indicates the probability of cancer occurrence, usually expressed as the proportion of patients presenting with cancer per unit number of population, if Risk is at 10 -6 ～10 -4 In between (i.e., 1 cancer patient per 1-100 million increase), the substance is not at risk of carcinogenesis; risk ing 、Risk inh 、Risk dermal The health risks of carcinogenesis caused by food intake, breath inhalation and skin contact of heavy metals in the dustfall to a human body are respectively avoided; total Risk is the Total carcinogenic health Risk to humans through three pathways.
Further, the formula for calculating the proportion of the effectiveness of the heavy metal in the fourth step to the total amount is as follows: bioavailability% = C SBET /C×100％。
Further, the non-carcinogenic risk calculation formula in step four is: AT = ED × 365.
Further, the pH of the glycine solution in the third step is 1.5.
Further, the aperture of the acetate fiber filter membrane in the third step is 0.45um.
Compared with the prior art, the invention has the beneficial effects that: according to the health risk assessment method for the heavy metals in dust fall based on the metal SBET, collected dust fall samples are processed into three groups according to three ways of dust fall in the atmosphere entering a human body, and total carcinogenic health risks generated by the human body entering the human body through three ways of food intake, breath inhalation and skin contact are calculated respectively. In a word, the invention provides a risk assessment method which is convenient to operate, scientific in assessment and small in error, and the risk assessment method is used for assessing and preventing carcinogenic risks of heavy metals in dust fall for people.
Drawings
FIG. 1 is a schematic flow diagram of the present invention.
Detailed Description
For the convenience of understanding of the embodiments of the present invention, the present invention will be further explained with reference to fig. 1 and the specific embodiments, which are not intended to limit the embodiments of the present invention.
A health risk assessment method for heavy metals in dustfall based on metal SBET comprises the following steps:
collecting atmospheric dust fall by adopting a sweeping method in sunny and windless weather, screening out large-particle impurities in the atmospheric dust fall, naturally drying the impurities, and screening the dust fall with the particle size of less than 63 mu m for heavy metal analysis;
weighing 0.2g of dust fall sample, adding 8.0mL of concentrated nitric acid and 2.0mL of perchloric acid, heating at 50 ℃ for 3 hours, heating at 75 ℃ for 1 hour, heating at 100 ℃ for 1 hour, heating at 125 ℃ for 1 hour, heating at 150 ℃ for 3 hours, heating at 175 ℃ for 2 hours, heating at 190 ℃ for 3 hours for nearly drying, cooling, adding 5% of dilute nitric acid, centrifuging, taking supernatant, and testing the concentration of various heavy metals in the supernatant by using Inductively coupled plasma mass spectrometry (ICP-MS).
Step three, weighing 0.2g of dustfall sample for extracting the biological effectiveness, wherein the specific operation method comprises the following steps:
(1) First, 2L of glycine extract was prepared: weighing 60.056g of glycine, adding 1400 g of deionized water for dissolving, adding HCl dropwise and deionized water simultaneously until the total volume reaches 2L and the pH reaches 1.5 finally;
(2) Weighing 0.2g of dust fall sample, adding 25ml of extracting solution, fully shaking for 1 hour at 37 ℃, fully reacting heavy metal in dust fall with glycine extracting solution, and testing the pH value of the extracting solution after reaction to be 1.0;
(3) Centrifuging the reaction mixture at 4000rpm for 15 minutes, filtering the centrifuged supernatant with 0.45um acetate fiber filter membrane, taking the filtered solution for heavy metal determination, wherein the determined content is the content C of the heavy metal biological effective part SBET Calculating the contribution rate (bioavailability%) of the bioavailability of the heavy metal in the total amount of the heavy metal, wherein the calculation formula is as follows: bioavailability% = C SBET /C×100％；
Step four, heavy metals in the dustfall enter a human body mainly through three ways of direct ingestion by mouth and food, breath inhalation and skin contact, and according to the United states EPA human body exposure risk assessment method, a health risk calculation model is as follows:
(1) Exposure dose calculation method, as follows:
wherein D is ing Average daily exposure for the food intake route, D inh Mean daily Exposure for the respiratory inhalation route, D dermal The daily average exposure for skin contact, and the lifetime daily average exposure for inhalation of carcinogenic heavy metals in mg (kg. D) -1 (ii) a C is the concentration of the total content of the measured dustfall heavy metal, and the unit is mg-kg -1 (ii) a The bioavailability% is the proportion of the heavy metal effectiveness in the total amount; ingR is the dust-fall frequency of oral food intake, and the unit is mg/d; inhR is the dust fall frequency of the inhaled air through breathing and is m 3 D; EF is the exposure frequency; ED is the exposure age; SL is skin adhesion in mg/cm 2 (ii) a SA is the exposed skin surface area in cm 2 (ii) a ABS is a skin absorption factor; PEF is an atmospheric dust fall generation factor; BW is mean body weight; AT is the non-carcinogenic risk, and the calculation formula is as follows: AT = ED × 365;
(2) The method for calculating the health risk of different exposure ways of heavy metals in dustfall is as follows:
HQ＝D/R f D 0
HI＝∑HQ＝HQ ing +HQ inh +HQ dermal
Risk＝LADD×SF 0
Total Risk＝∑Risk＝Risk ing +Risk inh +Risk dermal
wherein, HQ is a non-carcinogenic risk quotient which represents the non-carcinogenic risk of a single pollutant through a certain path; HQ ing 、HQ inh 、HQ dermal The non-carcinogenic health risks to human bodies are generated by heavy metals in the dustfall through three ways of food intake, breath inhalation and skin contact; HI is the total non-carcinogenic health risk to a human body by three pathways; r f D 0 Reference dose for daily exposure to health risks in mg (kg. D) -1 The maximum amount of pollutants which can not cause adverse reactions to human bodies and are taken by each kg of human bodies every day is shown; when HQ and HI are less than or equal to 1.0, the heavy metals are considered to have less or no obvious harm to the non-carcinogenic health risk of the human body; when HQ and HI are more than 1.0, the heavy metals are considered to have non-carcinogenic risks and possibly cause harm to human bodies; slope coefficient SF 0 The maximum probability of carcinogenic effect of human body exposed to a certain pollutant with a certain dosage is expressed in mg (kg. D) -1 (ii) a Risk is an oncogenic Risk and indicates the probability of cancer occurrence, usually expressed as the proportion of patients presenting with cancer per unit number of population, if Risk is at 10 -6 ～10 -4 In between (i.e., 1 cancer patient per 1-100 million), the substance does not have a carcinogenic risk; risk ing 、Risk inh 、Risk dermal The health risks of carcinogenesis caused by food intake, breath inhalation and skin contact of heavy metals in the dustfall to a human body are respectively avoided; total Risk is the Total carcinogenic health Risk to humans through three pathways.
According to the metal SBET-based health risk assessment method for heavy metals in dust fall, atmospheric dust fall in a certain Nanjing park is collected, a dust fall sample is preprocessed, and the total content of the heavy metals in the atmospheric dust fall in the certain Nanjing park is obtained, as shown in Table 1.
TABLE 1 Total amount of heavy metals in Nanjing A park dust fall (unit: mg/kg)
The bioavailabilty of the heavy metals is extracted according to the SBET method, and the Bioaccessibility percent of the bioavailabilty of the heavy metals in the total amount of the heavy metals is calculated and is shown in Table 2.
Table 2 contribution ratio (%) of heavy metal bioavailability in dustfall in Nanjing's park to total amount
According to a health risk assessment formula, non-carcinogenic exposure risks and carcinogenic risks of heavy metals in the dustfall to different people are calculated, and the results are shown in table 3.
TABLE 3 non-carcinogenic risk index and carcinogenic risk of heavy metals in Nanjing A park
Overall, the non-carcinogenic risk coefficient HQ of each heavy metal is less than 1, and the total non-carcinogenic risk index HI is less than 1, so that the heavy metals in the dustfall have no non-carcinogenic risk to human bodies, and the total non-carcinogenic risk of each exposure path of single heavy metal is ranked As>Pb>Cr>Mn>V>Cd>Ni>Cu>Zn>, co; children have a higher non-carcinogenic risk than adults; the non-carcinogenic risks of each exposure route are ranked as oral intake > skin contact > respiratory intake. The carcinogenic risk of carcinogenic heavy metal As is 10 -6 -10 -4 While As has a certain carcinogenic risk, other elements Cd, cr, ni and Co have carcinogenic risks less than 10 within acceptable limits -6 Indicating that there is no carcinogenic risk.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (6)
1. A health risk assessment method for heavy metals in dust fall based on metal SBET is characterized by comprising the following steps:
collecting atmospheric dust fall by adopting a sweeping method in sunny and windless weather, screening out large-particle impurities in the atmospheric dust fall, naturally drying the impurities, and screening the dust fall with the particle size of less than 63 mu m for heavy metal analysis;
weighing 0.2g of dust-falling sample, adding 8.0mL of concentrated nitric acid and 2.0mL of perchloric acid, heating at 50 ℃ for 3 hours, heating at 75 ℃ for 1 hour, heating at 100 ℃ for 1 hour, heating at 125 ℃ for 1 hour, heating at 150 ℃ for 3 hours, heating at 175 ℃ for 2 hours, heating at 190 ℃ for 3 hours for nearly drying, cooling, adding 5% of dilute nitric acid, centrifuging, taking supernatant, and testing the concentration of various heavy metals in the supernatant by using Inductively coupled plasma mass spectrometry (ICP-MS);
step three, weighing 0.2g of dust fall sample for extracting the biological effectiveness, wherein the specific operation method comprises the following steps:
(1) First, 2L of glycine extract was prepared: weighing 60.056g of glycine, adding 1400-1600ml of deionized water for dissolving, dropwise adding HCl while adding deionized water until the total volume reaches 2L;
(2) Weighing 0.2g of dustfall sample, adding 25ml of extracting solution, fully shaking for 1-1.5 hours at 37 ℃ to ensure that heavy metal in dustfall fully reacts with the glycine extracting solution, and testing the pH of the extracting solution after reaction to be 1.0-2.0, otherwise, shaking and reacting again;
(3) Centrifuging the reaction mixture at 4000rpm for 15 minutes, passing the centrifuged supernatant through an acetate fiber filter membrane, taking the filtered solution for heavy metal determination, wherein the determined content is the content C of the heavy metal biological effective part SBET Calculating the contribution rate (bioavailability%) of the bioavailability of the heavy metal in the total amount of the heavy metal;
step four, heavy metals in the dustfall enter a human body mainly through three ways of direct ingestion by mouth and food, breath inhalation and skin contact, and according to the United states EPA human body exposure risk assessment method, a health risk calculation model is as follows:
(1) Exposure dose calculation method, as follows:
wherein D is ing Average daily exposure for the food intake route, D inh Mean daily Exposure for the respiratory inhalation route, D dermal The daily average exposure for skin contact, and the lifetime daily average exposure for inhalation of carcinogenic heavy metals in mg (kg. D) -1 (ii) a C is the concentration of the total content of the measured dustfall heavy metal, and the unit is mg.kg -1 (ii) a The bioavailability% is the proportion of the heavy metal effectiveness in the total amount; ingR is the dust-fall frequency of oral food intake, and the unit is mg/d; inhR is the dust fall frequency of the inhaled air through breathing and is m 3 D; EF is the exposure frequency; ED is exposure age; SL is skin adhesion in mg/cm 2 (ii) a SA is the exposed skin surface area in cm 2 (ii) a ABS is a skin absorption factor; PEF is an atmospheric dust reduction production factor; BW is mean body weight; AT is a non-carcinogenic risk;
(2) The method for calculating the health risk of different exposure ways of heavy metals in dustfall is as follows:
HQ＝D/R f D 0
HI＝∑HQ＝HQ ing +HQ inh +HQ dermal
Risk＝LADD×SF 0
TotalRisk＝∑Risk＝Risk ing +Risk inh +Risk dermal
wherein, HQ is a non-carcinogenic risk quotient which represents the non-carcinogenic risk of a single pollutant passing through a certain path; HQ ing 、HQ inh 、HQ dermal Are respectively provided withThe non-carcinogenic health risk of the human body is generated by the heavy metal in the dustfall through three ways of food intake, breath inhalation and skin contact; HI is the total non-carcinogenic health risk to a human body by three pathways; r f D 0 Reference dose for daily exposure to health risks in mg (kg. D) -1 The maximum amount of pollutants which can not cause adverse reactions of human bodies and are taken by each kg of human bodies every day is shown; when HQ and HI are less than or equal to 1.0, the heavy metals are considered to have less or no obvious harm to the non-carcinogenic health risk of the human body; when HQ and HI are more than 1.0, considering that heavy metals have non-carcinogenic risks and possibly cause harm to human bodies; slope coefficient SF 0 The maximum probability of carcinogenic effect of human body exposed to a certain pollutant with a certain dosage is expressed in mg (kg. D) -1 (ii) a Risk is an oncogenic Risk and indicates the probability of cancer occurrence, usually expressed as the proportion of patients presenting with cancer per unit number of population, if Risk is at 10 -6 ～10 -4 In between (i.e., 1 cancer patient per 1-100 million increase), the substance is not at risk of carcinogenesis; risk ing 、Risk inh 、Risk dermal The health risks of carcinogenesis caused by food intake, breath inhalation and skin contact of heavy metals in the dustfall to a human body are respectively avoided; total Risk is the Total carcinogenic health Risk to humans through three pathways.
2. The metal SBET-based method for assessing health risk of heavy metals in dustfall according to claim 1, wherein the formula for calculating the proportion of the effectiveness of the heavy metals in the total amount in the fourth step is as follows: bioavailability% = C SBET /C×100％。
3. The metal SBET-based method for assessing health risk of heavy metals in dustfall according to claim 1, wherein the non-carcinogenic risk calculation formula in the fourth step is as follows: AT = ED × 365.
4. The method for assessing the health risk of heavy metals in dustfall based on metal SBET according to claim 1, wherein the pH of the glycine solution in the third step is 1.5.
5. The method for assessing the health risk of heavy metals in dustfall based on metal SBET according to claim 1, wherein the pore diameter of the acetate fiber filter membrane in the third step is 0.45um.
6. The method for assessing the health risk of heavy metals in dustfall based on metal SBET as claimed in claim 1, wherein the metal effectiveness calculation formula is bioavailability% = C SBET /C×100％。
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108931797A (en) * | 2018-05-29 | 2018-12-04 | 中国科学院新疆生态与地理研究所 | The method of fine quantitatively base station sparse region flying dust toxic metals exposed population group |
| CN110164556A (en) * | 2019-05-30 | 2019-08-23 | 福建工程学院 | The PM2.5 heavy metal health risk assessment method of a variety of microenvironment exposures |
| CN110361467A (en) * | 2019-07-08 | 2019-10-22 | 河南师范大学 | Multipath exposure assessment method of the human body to fire retardant |
| CN111915217A (en) * | 2020-08-14 | 2020-11-10 | 中国科学院地理科学与资源研究所 | GIS-based mining area soil heavy metal potential risk evaluation method |
| CN114334164A (en) * | 2021-12-15 | 2022-04-12 | 生态环境部南京环境科学研究所 | System and method for health risk assessment of asbestos mining area |
| CN114628032A (en) * | 2022-02-18 | 2022-06-14 | 北京市生态环境保护科学研究院 | Method for assessing health risks of pollutants in soil by skin contact exposure |
| WO2022140868A1 (en) * | 2020-12-30 | 2022-07-07 | Universidad Tecnológica Metropolitana | Portable modular gastrointestinal simulator system that quantifies bioaccessibility of metals in a sample remotely and in real time, and method |
| CN116402353A (en) * | 2023-06-06 | 2023-07-07 | 长江水资源保护科学研究所 | Comprehensive evaluation method and system for heavy metal pollution of industrialized urban water body |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108931797A (en) * | 2018-05-29 | 2018-12-04 | 中国科学院新疆生态与地理研究所 | The method of fine quantitatively base station sparse region flying dust toxic metals exposed population group |
| CN110164556A (en) * | 2019-05-30 | 2019-08-23 | 福建工程学院 | The PM2.5 heavy metal health risk assessment method of a variety of microenvironment exposures |
| CN110361467A (en) * | 2019-07-08 | 2019-10-22 | 河南师范大学 | Multipath exposure assessment method of the human body to fire retardant |
| CN111915217A (en) * | 2020-08-14 | 2020-11-10 | 中国科学院地理科学与资源研究所 | GIS-based mining area soil heavy metal potential risk evaluation method |
| WO2022140868A1 (en) * | 2020-12-30 | 2022-07-07 | Universidad Tecnológica Metropolitana | Portable modular gastrointestinal simulator system that quantifies bioaccessibility of metals in a sample remotely and in real time, and method |
| CN114334164A (en) * | 2021-12-15 | 2022-04-12 | 生态环境部南京环境科学研究所 | System and method for health risk assessment of asbestos mining area |
| CN114628032A (en) * | 2022-02-18 | 2022-06-14 | 北京市生态环境保护科学研究院 | Method for assessing health risks of pollutants in soil by skin contact exposure |
| CN114628032B (en) * | 2022-02-18 | 2022-12-23 | 北京市生态环境保护科学研究院 | Method for assessing health risks of pollutants in soil by skin contact exposure |
| CN116402353A (en) * | 2023-06-06 | 2023-07-07 | 长江水资源保护科学研究所 | Comprehensive evaluation method and system for heavy metal pollution of industrialized urban water body |
| CN116402353B (en) * | 2023-06-06 | 2023-09-05 | 长江水资源保护科学研究所 | Comprehensive evaluation method and system for heavy metal pollution of industrialized urban water body |
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