tylork   Album Posted Jul.23rd, 2024, viewed 7 times

Plant Growth Regulator Residue Testing

Plant growth regulators (PGR) are a class of small molecule compounds with plant hormone activity that can affect plant growth and development. Such compounds are often used to enhance plant resistance, promote plant cell division and growth, increase yield, and improve quality. There are many types of growth regulators with different properties. However, as a chemical substance, plant growth regulators also have certain toxicity. In crop production, the wrong application of plant growth regulators, such as blind or excessive use, may affect the quality and safety of agricultural products, reduce production, and even pose a potential threat to public health.
At present, many countries and regions have successively formulated corresponding maximum residue limits (MRL) standards for plant growth regulators, which are used as restrictions on agricultural trade between countries. For the import and export of products and to protect the health and safety of producers and consumers, PGR testing is particularly important.

PLANT GROWTH REGULATOR CAN BE ANALYZED

1 Abscisic acid, ABA 11 Mepiquat chloride
2 Choline Chloride 12 Paclobutrazol
3 Chlormequat chloride 13 Thidiazuron
4 Cloprop 14 Trinexapac-ethyl
5 Cyclanilide 15 Triapenthenol
6 Daminozide 16 Uniconazole
7 Forchlorfenuron 17 1-Naphthaleneacedic (NAA)
8 Gibberellic acid (GA3) 18 2,3,5-Triiodobenzoic acid (TIBA)
9 Inabenefide 19 4-Chlorophenoxyacetic acid
10 Indole-3-ylacetic (IAA) 20 6-Benzylaminopurine (6-BA)

Plant Growth Regulator Residue Testing Technology Platform
Sample pretreatment:

The quick, easy, cheap, effective, rugged and safe (QuEChERS) method
Solid phase extraction (SPE)
Liquid phase extraction (LPE)
Sample detection technology:

Gas chromatography-mass spectrometry (GC-MS)
The detection limit is 3.0~8.0μg/kg, and the quantification limit is 10.0~25.0μg/kg. The specific value depends on the tested substance.
High-performance liquid chromatography-mass spectrometry (HPLC/MS/MS)
The detection limit is between 0.02-6.0 μg/kg, and the limit of quantification is between 0.1-15.0 μg/kg. The specific value depends on the tested substance.