Guangdong Jia Mei Biological Technology Co.Ltd , https://www.jaymeimask.com
What can be detected by the pesticide residue detector?
Pesticide residue detector can be used for the detection of organophosphorus and carbamate pesticide residues in vegetables, fruits, soybeans, cotton, grain, tea and other agricultural products as well as water and soil.
Where do I need a pesticide residue detector?
Pesticide residue detectors are widely used in food surveillance, industrial and commercial, quality inspection, environmental protection, agricultural systems, on-board mobile food safety testing systems; provincial and large and medium-sized cities food supervision, industry and commerce, quality inspection, agricultural system testing centers; large and medium-sized agricultural and sideline products wholesale Market; large and medium-sized enterprises, institutions, unit canteens and catering centers.
What are the classifications of pesticide residues?
1, according to the source, there are minerals, biology, chemicals, hormones.
2, according to the use, there are pesticides, acaricides, fungicides, organisms, growth regulators.
3, according to the role of prevention and treatment, there are control agents and therapeutic agents.
At present, there are mainly three types of pesticide residues in China's vegetables:
1. Organophosphorus: This pesticide is a broad-spectrum insecticide with a wide range of applications, mainly including more than 60 kinds of dimethoate, trichlorfon, dichlorvos, endogenous phosphorus, parathion, malathion and so on.
2. Organochlorines: The pesticide is a highly toxic pesticide. Among them, 666, DDT and other countries have long been banned, but there are still illegal use cases, especially Lin Dan, 7O54, Toxaphene, Chlordane, etc. use.
3. Carbamates: This pesticide is a widely used new insecticide and herbicide, such as Kangwei, Carbofuran, carbaryl, chlorpyrifos, and chlorpyrifos. Its toxicity is similar to that of organic phosphorus, but its toxicity is lighter and recovery is faster.
4. In addition, although some pesticides are inherently less toxic, they produce higher levels of impurities or metabolites, such as impurities produced during the production of dithiocarbamate fungicides and their metabolites, ethylenethioureas, carcinogens. , the impurities in dicofol, DDT, the main metabolites of butyl thiocarbamate, propyl thiocarbamate, carbofuran and 3-hydroxy carbofuran.
What are the hazards of absorbing residual pesticides?
The types of residual pesticides are mainly organophosphorus and organochlorines. Consumption of a small amount of residual pesticides, the body itself will degrade, will not suddenly cause acute poisoning, but long-term consumption of agricultural products with residual pesticides will inevitably bring great harm to human health, the hazards are summarized as follows: pesticides enter Food, vegetables, fruits, fish, shrimp, meat, eggs, and milk cause food pollution and endanger people's health. Generally, organochlorine pesticides metabolize slowly in the human body and have a long accumulation time. The residual organic chlorine in the human body is mainly concentrated in fat. For example, DDT is in a ratio of 1:4:30:300 in human blood, brain, liver and adipose tissue; and a ratio of 1:5:30:150 in dieldrin. Since pesticide residues are very harmful to humans and organisms, China's application of pesticides is strictly regulated, and the allowable amount of pesticide residues in foods is regulated.
First, lead to the decline of body immunity: long-term consumption of vegetables with residual pesticides, pesticides can be distributed to the synapses and neuromuscular junctions after being absorbed by the blood, directly damage the neurons, causing central nervous system death, resulting in immunity of various organs of the body The power is falling. For example, frequent colds, dizziness, palpitations, night sweats, insomnia, forgetfulness, etc.
Second, it may cause cancer: Chemical substances often contained in residual pesticides can cause cancer in cells in various tissues.
Third, increase the burden on the liver: residual pesticides enter the body, relying mainly on the liver to produce enzymes to absorb these toxins for oxidative decomposition. If you eat fruits and vegetables with residual pesticides for a long time, the liver will work constantly to break down these toxins. Long-term overload work can cause some dry liver lesions such as cirrhosis and hydronephrosis.
Fourth, leading to gastrointestinal diseases: due to the gastrointestinal digestive system, the stomach wall folds more, easy to contain poison. Such residual pesticides tend to accumulate therein, causing symptoms such as chronic diarrhea and nausea.
Fifth, transfer to the next generation through embryos and milk, and can lead to "three": carcinogenic, teratogenic, mutagenic, and sometimes directly lead to the death of consumers.
What are the new standards for pesticide residues in fruits in China? At present, China has formulated a national standard of 197 pesticide residues (MRL) of 79 pesticides in 32 kinds of agricultural and sideline products, among which the high limit of pesticide residues on fruit trees The standard is as follows (Note: mg / kg = mg / kg): 1, chlorothalonil ≤ 1mg / kg; 2, fenthion ≤ 0.05mg / kg; 3, phenyl butyl ≤ ≤ 5mg / kg; 4, glyphosate ≤0.1mg/kg;5, diflubenzuron ≤1mg/kg; 6, mancozeb ≤3mg/kg (pear fruit); 7, mancozeb ≤5mg/kg (small grain fruit); 8, DDT ≤ 0.1mg/kg; 9, trichlorfon ≤ 0.1mg / kg; 10, chlorpyrifos ≤ 1mg / kg (pear fruit); 11, parathion is not detected; 12, carbendazim ≤ 0.5mg / kg; 13 , diazinon ≤ 0.5mg / kg 14, flufenacetate ≤ 0.5mg / kg; 15, phorate is not detected 16, carbaryl ≤ 2.5mg / kg; 17, metalaxyl ≤ 1mg / kg (small grain fruit) 18, anti-èšœå¨ â‰¤2.5mg/kg; 19, captan ≤15mg/kg; 20, dimethoate ≤1mg/kg; 21, six six six ≤0.2mg/kg;22, chlorofluorocyanide Pyrethroid ≤0.2mg/kg (pear fruit); 23, chlorine Pyrethroid ≤ 2mg / kg; 24, malathion is not detected; 25, fenvalerate ≤ 0.2mg / kg; 26, acetylene ≤ 5mg / kg (pear fruit); 27, thiazolone ≤ 0.5mg/kg (pear fruit); 28, triazolone ≤ 0.2mg/kg29, triazolium ≤ 2mg / kg (pear fruit); 30, chlorpyrifos ≤ 0.5mg / kg; 31, double armor ≤ 0.5mg/kg (pear fruit); 32, tetramethylazine ≤ 1mg; 33, phoxim ≤ 0.05mg / kg; 34, bromo oxime ester ≤ 5mg / kg (pruned fruit); 35, deltamethrin ≤ 0.1 Mg/kg (skin edible); 36, imipenem ≤ 0.5mg/kg; 37, acephate ≤ 0.5mg/kg; 38, iprodione ≤ 10mg / kg (pear); 39, dichlorvos ≤0.2mg/kg.
What are pesticides used to control crop pests and diseases. It is also a special kind of disaster-resistant commodity, and it is also an important agricultural production material. It plays an important role in promoting agricultural production and increasing production per unit area.