PMID- 34213173
OWN - NLM
STAT- MEDLINE
DCOM- 20210716
LR  - 20210716
IS  - 1872-2059 (Electronic)
IS  - 1000-8713 (Linking)
VI  - 38
IP  - 2
DP  - 2020 Feb 8
TI  - [Study and comparison of detection methods for prochloraz and its metabolite 
      residue in garlic bolting].
PG  - 232-237
LID - 10.3724/SP.J.1123.2019.04008 [doi]
AB  - Two analytical methods for the determination of prochloraz and its metabolite 
      residues in garlic bolting were established and compared. In the QuEChERS method, 
      the sample was extracted with acetonitrile and purified in a QuEChERS 
      purification tube, and then, the contents of prochloraz and its metabolite 
      2,4,6-trichlorophenol were determined by gas chromatography. The hydrolysis 
      method involved extraction of the sample with acetonitrile, hydrolysis by 
      pyridine hydrochloride, purification with sulfuric acid, and determination of the 
      prochloraz content by gas chromatography. The standard curve in the hydrolysis 
      and QuEChERS methods showed a good linear relationship in the concentration range 
      of 0.01-2 mg/L, and the correlation coefficient (r(2)) was greater than 0.999. 
      The limit of quantitation (LOQ) for prochloraz in the hydrolysis method was 0.005 
      mg/kg. The LOQ for prochloraz in the QuEChERS method was 0.039 mg/kg, and that 
      for 2,4,6-trichlorophenol was 0.003 mg/kg. At three spiked levels in the sample, 
      the recoveries were 81.5%-105.4%, and the relative standard deviations (RSDs) 
      were between 1.3%-6.8%. In the determination of positive samples, the hydrolysis 
      method can detect the total amount of prochloraz and its main metabolites. 
      QuEChERS method can detect the presence and contents of prochloraz and its main 
      metabolite 2,4,6-trichlorophenol. These two methods can complement each other for 
      the detection and confirmation of prochloraz and its metabolites in garlic 
      bolting.
FAU - Chen, Keyun
AU  - Chen K
AD  - Shandong Institute for Food and Drug Control, Jinan 250101, China.
FAU - Li, Ling
AU  - Li L
AD  - Shandong Institute for Food and Drug Control, Jinan 250101, China.
FAU - Ju, Xiang
AU  - Ju X
AD  - Shandong Institute for Food and Drug Control, Jinan 250101, China.
FAU - Wang, Yanli
AU  - Wang Y
AD  - Shandong Institute for Food and Drug Control, Jinan 250101, China.
FAU - Liu, Yanming
AU  - Liu Y
AD  - Shandong Institute for Food and Drug Control, Jinan 250101, China.
LA  - chi
PT  - Journal Article
PL  - China
TA  - Se Pu
JT  - Se pu = Chinese journal of chromatography
JID - 9424804
RN  - 0 (Fungicides, Industrial)
RN  - 0 (Imidazoles)
RN  - 99SFL01YCL (prochloraz)
SB  - IM
MH  - *Fungicides, Industrial/analysis
MH  - *Garlic
MH  - Imidazoles/*analysis
OTO - NOTNLM
OT  - 2,4,6-trichlorophenol
OT  - QuEChERS
OT  - garlic bolting
OT  - gas chromatography (GC)
OT  - hydrolysis method
OT  - prochloraz
EDAT- 2020/02/08 00:00
MHDA- 2021/07/17 06:00
CRDT- 2021/07/02 09:12
PHST- 2021/07/02 09:12 [entrez]
PHST- 2020/02/08 00:00 [pubmed]
PHST- 2021/07/17 06:00 [medline]
AID - 10.3724/SP.J.1123.2019.04008 [doi]
PST - ppublish
SO  - Se Pu. 2020 Feb 8;38(2):232-237. doi: 10.3724/SP.J.1123.2019.04008.