CN109900886A - Whether the method for micro- plastics is contained in a kind of detection feces of livestock and poultry - Google Patents
Whether the method for micro- plastics is contained in a kind of detection feces of livestock and poultry Download PDFInfo
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- CN109900886A CN109900886A CN201910146416.7A CN201910146416A CN109900886A CN 109900886 A CN109900886 A CN 109900886A CN 201910146416 A CN201910146416 A CN 201910146416A CN 109900886 A CN109900886 A CN 109900886A
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Abstract
The method that the invention discloses a kind of to separate micro- plastics from feces of livestock and poultry, this method comprises: (1) collects feces of livestock and poultry from farm and other places；(2) excrement of collection is mixed liquid with nitric acid and hydrogen peroxide to mix, is cleared up on hot plate；(3) will through step (2), treated that livestock and poultry pour into that strainer cleans under slow water flow, remove it is some does not clear up complete small organic matter particle, observation detects in remaining substance whether have micro- plastics.The method of the present invention effectively can be separated and be detected to the micro- plastics being enriched in feces of livestock and poultry, a kind of simple detection method is provided to the Environmental security of feces of livestock and poultry and its biological organic fertilizer, it reduces to livestock and poultry, the even influence and harm of human health has the advantages that processing cost is low, easy to operate.
Description
Technical field
Whether the invention belongs to the Environmental security fields that feces of livestock and poultry utilizes, and in particular to contain in a kind of detection feces of livestock and poultry
There is the method for micro- plastics.
Background technique
Plastic products are widely used in life now, these Bulk plastics are easy the external forces such as torn, damaged
Form micro- plastics.Micro- plastics generally refer to plastic grain or fragment that longest dimension is less than 5mm, since its is distinctive physico
Feature is learned, chemical property is stablized, and is easy propagate, scatter in the environment, there can be centuries in the environment to thousands of years, conduct
A kind of novel environmental pollutant is increasingly taken seriously.Micro- plastics are difficult to degrade since it is small in size, are easy dynamic by some livestock and poultry etc.
Object is eaten by mistake, generates adverse effect to their health.Meanwhile these feces of livestock and poultry for containing micro- plastics can be made into bio-fertilizer or
Person is applied directly to farmland, and then aggravates the pollution of environment.And as the meat products of the livestock and poultry such as chicken, pig, sheep is that our mankind pass through
Often feeding, if they contain micro- plastics in vivo, even also there is biggish adverse effect to the health of the mankind.
Summary of the invention
In order to solve the above technical problems, the present invention provides a kind of method for detecting and whether containing micro- plastics in feces of livestock and poultry,
Include:
(1) feces of livestock and poultry is collected from farm and other places；
(2) excrement of collection is mixed liquid with nitric acid and hydrogen peroxide to mix, is cleared up on hot plate；
(3) will through step (2), treated that feces of livestock and poultry pours into that strainer cleans under slow water flow, remove and some do not cleared up
Whether full organic matter suspended matter, observing has micro- plastics in remaining substance.
Preferably, micro- plastics are the plastic grain or fragment that size is less than 5mm.
Preferably, the mixed liquid is that nitric acid and hydrogen peroxide are mixed with the ratio of weight ratio 1:1.
Preferably, the heating temperature of heating plate is 65 DEG C.
The method of the present invention effectively can carry out separation detection to the micro- plastics being enriched in feces of livestock and poultry, can not only be some meat
Quality of item provides a kind of new examination criteria, impacts and endangers to reduce micro- plastics to the animals and humans health such as livestock and poultry
Evil, inventive method have the advantages that processing cost is low, easy to operate.
Specific embodiment
Embodiment 1
The present invention provides a kind of method for detecting and whether containing micro- plastics in feces of livestock and poultry, comprising the following steps:
(1) feces of livestock and poultry is collected from farm and other places；
(2) excrement of collection is mixed liquid with nitric acid and hydrogen peroxide to mix, is cleared up on hot plate；
(3) will through step (2), treated that feces of livestock and poultry pours into that strainer cleans under slow water flow, remove and some do not cleared up
Whether full organic matter suspended matter, observing has micro- plastics in remaining substance.
Micro- plastics are the plastic grain or fragment that size is less than 5mm.
The mixed liquid is that nitric acid and hydrogen peroxide are mixed with the ratio of weight ratio 1:1.
The heating temperature of heating plate is 65 DEG C.
The method of the present invention effectively can be separated and be detected to the micro- plastics being enriched in feces of livestock and poultry, to feces of livestock and poultry and
The Environmental security of its biological organic fertilizer provides a kind of simple detection method, reduces to livestock and poultry, the even shadow of human health
It rings and endangers, have the advantages that processing cost is low, easy to operate.
(1) meat product is the most important group food of human diet, and common meat includes poultry meat, poultry, they are also
Often it is made into many meat products to be sold.Poultry meat has pig, sheep etc., and poultry has chicken etc..These meats are as food, people's
A kind of special status is enjoyed in universal.Present plastic products are widely used in life, in the breeding process of livestock and poultry
If not paying attention to the feed that micro- plastic products will be made to be entrained in livestock and poultry, life place etc. slightly, eaten by mistake by them, it is internal at them
A large amount of enrichments, impact and endanger to their health.
It can judge whether they contain micro- plastics in vivo by the detection to feces of livestock and poultry.
(2) density of common plastics is between 0.8~1.2, and playground between 1.3~1.7, and is raiseeed with the density of black plastics
The density of poultry manure also between 0.8~1.2, cannot carry out the method detection of flotation with density contrast.Strong acid and strong oxidizing property are molten
Liquid can clear up the organic matter in feces of livestock and poultry, and a large amount of plastics cannot be oxidized decomposition, it is possible to resolution organic matter
Method whether contain micro- plastics to detect in feces of livestock and poultry.It to be detected using the method for resolution organic matter, it is more economical
Strong acid has nitric acid, sulfuric acid, perchloric acid, hydrochloric acid and hydrogenperoxide steam generator to be used in mixed way to be cleared up.Perchloric acid and sulfuric acid reaction are non-
Often acutely, safety bottom is easy to damage the people of surrounding, and hydrochloric acid reaction is more violent, and there is also some potential safety problems, phases
Comparatively speaking nitric acid and hydrogen peroxide are used in mixed way cost-effective, safety convenient.Nitric acid and hydrogen peroxide 1:1,1:2,1:3,1:
4, only use 1:1 most suitable in these ratios of 2:1,3:1,4:1, others reaction not exclusively, is not cleared up completely there are also more
Organic matter, it is difficult to differentiate whether contain organic matter.In conclusion carrying out resolution safety most with the nitric acid of 1:1 and hydrogen peroxide
Height, and it is time-consuming short, it is economical and practical.
(3) micro- plastics (polypropylene, polyamide, polystyrene resin, high-density polyethylene resin) are put into test tube
In, suitable solvent is added, observes it and clears up situation.Its result is as follows:
1. polypropylene
All without significant change under nitric acid and the mixed liquid of any ratio of hydrogen peroxide, it is not decomposed；In perchloric acid and peroxide
Change under any ratio of hydrogen also without significant change, is not decomposed.
2. polystyrene resin
Also without significant change under any ratio of nitric acid and hydrogen peroxide, perchloric acid and hydrogen peroxide, it is not decomposed.
3. polyamide
It is mixed in liquid in nitric acid and hydrogen peroxide and is decomposed into oily mater, it is viscous to become white film shape substance after water to the cold
It connects together, and is sticked on test tube wall, it is difficult to clean；It solidifies and is difficult to down after perchloric acid and hydrogen peroxide are mixed and is resolved in liquid
Test tube out.
4. high-density polyethylene resin
Also without significant change under any ratio of nitric acid and hydrogen peroxide, perchloric acid and hydrogen peroxide, it is not decomposed.
5. the black plastics in playground
Also without significant change under any ratio of nitric acid and hydrogen peroxide, perchloric acid and hydrogen peroxide, it is not decomposed.
It can not be decomposed by strong acid by clearing up most of plastics it can be seen from situation above, and even if having decomposed
May also pass through other processing (polyamide be decomposed after to the cold water become film-form substance again, there are also some spies of plastics
Sign) it can also distinguish, so it is suitable convenient and fast for carrying out resolution detection with the mixed liquid of nitric acid and hydrogen peroxide 1:1.
(4) excrement of different animals (pig manure, sheep dung, chicken manure) and micro- plastics are put into 500ml beaker, are added appropriate
Nitric acid and hydrogen peroxide mix liquid, cleared up under 65 degrees Celsius.
1 plastic material of table and density, size
Every kind of plastics bulk is ground into fritter respectively, bulk fritter is tested respectively, high-density polyethylene resin and
The black plastics in playground not easy grinding, does not do comparative test, so no data.
The micro- plastics recovery rate of table 2
Table 2 has reacted the resolution reaction rate of recovery comparison of different materials grinding front and back, and the black plastics in playground not easy grinding does not have
Comparative test is done, so no data.
The above results show that mixing liquid resolution using nitric acid and hydrogen peroxide 1:1 is that feces of livestock and poultry can be effectively detected out
In whether contain micro- plastics.
Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (4)
1. whether containing the method for micro- plastics in a kind of detection feces of livestock and poultry, it is characterised in that: the following steps are included:
(1) feces of livestock and poultry is collected from farm and other places；
(2) excrement of collection is mixed liquid with nitric acid and hydrogen peroxide to mix, is cleared up on hot plate；
(3) will through step (2), treated that feces of livestock and poultry pours into that strainer cleans under slow water flow, remove it is some does not clear up it is complete
Whether organic matter suspended matter, observing has micro- plastics in remaining substance.
2. according to the method described in claim 1, it is characterized by: micro- plastics be size less than 5mm plastic grain or
Fragment.
3. according to the method described in claim 1, it is characterized by: the mixed liquid is nitric acid and hydrogen peroxide with weight ratio 1:1
Ratio mix.
4. according to the method described in claim 1, it is characterized by: the heating temperature of heating plate is 65 DEG C.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910146416.7A CN109900886A (en) | 2019-02-27 | 2019-02-27 | Whether the method for micro- plastics is contained in a kind of detection feces of livestock and poultry |
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| CN201910146416.7A CN109900886A (en) | 2019-02-27 | 2019-02-27 | Whether the method for micro- plastics is contained in a kind of detection feces of livestock and poultry |
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| CN109900886A true CN109900886A (en) | 2019-06-18 |
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Cited By (4)
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| CN111504741A (en) * | 2020-04-22 | 2020-08-07 | 山东师范大学 | Method for detecting micro-plastics in fish body |
| WO2020253036A1 (en) * | 2019-06-19 | 2020-12-24 | 南京大学 | Method for extracting micro plastic from human and animal excreta |
| CN113358623A (en) * | 2021-06-18 | 2021-09-07 | 佛山市植宝生态科技有限公司 | Method for quantitatively analyzing micro-plastics in leaf vegetables |
| CN115337684A (en) * | 2022-08-12 | 2022-11-15 | 中国科学院地理科学与资源研究所 | Micro-plastic extraction equipment and micro-plastic identification system in livestock and poultry excrement |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113358623A (en) * | 2021-06-18 | 2021-09-07 | 佛山市植宝生态科技有限公司 | Method for quantitatively analyzing micro-plastics in leaf vegetables |
| CN115337684A (en) * | 2022-08-12 | 2022-11-15 | 中国科学院地理科学与资源研究所 | Micro-plastic extraction equipment and micro-plastic identification system in livestock and poultry excrement |
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