Near the end of the year, the taste of the Spring Festival is more and more thick, more and more Beijing drifter,Shanghai drifter, and so on， everywhere drifter babies ready to go home for the Spring Festival!
The road is slow,and the water is the essential equipment,there are a variety of mountain springs, high-grade water, water parity.When you drink it，your mouth must be sweet and you must be satisfied, but...
What is bisphenol A
Bisphenol A (BPA) is used in industrial synthesis of materials such as polycarbonate (PC) and epoxy resin.
【English name】2,2-bis（4-hydroxyphenyl)propane;bisphenol A;
【Ways】Widely used in household plastic products, including drinking water bottles, baby bottles and so on.
【Poisonousness】Toxic, with serious uncertain side effects.
Where is bisphenol A？
Epoxy resin molecules and bisphenol A molecules
In industry, bisphenol A is used to synthesize materials such as polycarbonate (PC) and epoxy resin, which is widely used in mineral water bottles, medical devices and food packaging. It should be said that at present, bisphenol A is exposed to food, drink and household articles in our life.
The harm of bisphenol A
So what are the risks of bpa entering the esophagus? First, leading to organ failure, leukemia and weight drop sharply or rise rapidly, and second, leading to excess female female hormone secretion, A precocious puberty, the male sperm production, less damage to reproductive functions and the third, may cause diseases such as breast cancer, birth defects, and second, bisphenol A has more potential toxicity after entering the esophagus, we need to cause attaches great importance to, can not be ignored his potential toxicity.
Related standards for bisphenol A
In gb31604.10-2016, national standard for food safety, determination of the migration of 2, 2-2 (4-hydroxyphenyl) propane (bisphenol A) in food contact materials and products, the fixed limit of BPA in this method is 0.01mg/kg, and the detection limit is 0.001mg/kg. However, this method USES liquid chromatography-mass spectrometry, and the pretreatment and detection process is relatively complex and tedious, which is limited to laboratory testing.
Bisphenol A time detection process
Actually in our daily life to detect the presence of bisphenol A, it is not difficult, such as combining our surface-enhanced Raman used (SERS) technique, only need to drain water samples of 100 ul, after adding enhanced reagent in water sampling, can be directly on A portable Raman equipment for testing, can according to the water contained in the material of the Raman signal molecules that can identify whether contain bisphenol A (bpa) in the samples.
The test atlas
Our experiments have shown that there are small amounts of bpa (1-10 PPBS) in some of the bottled water we come in contact with, but babies don't panic, as long as it is safe, it can be metabolized out of the body.Correlation detection tool.
1. Handheld Raman spectral object recognition device
Suitable for sample identification of explosives, drugs, precursor chemicals, dangerous chemicals, psychotropic drugs, food, etc.
2. Nano reinforcing reagent
Nano - enhancers are suitable for the detection of trace targets in food and medicine.