PMID- 22475588
OWN - NLM
STAT- MEDLINE
DCOM- 20120910
LR  - 20120509
IS  - 1520-5118 (Electronic)
IS  - 0021-8561 (Linking)
VI  - 60
IP  - 18
DP  - 2012 May 9
TI  - Effect of sampling size on the determination of accurate pesticide residue levels 
      in Japanese agricultural commodities.
PG  - 4457-64
LID - 10.1021/jf3001923 [doi]
AB  - The uncertainty in pesticide residue levels (UPRL) associated with sampling size 
      was estimated using individual acetamiprid and cypermethrin residue data from 
      preharvested apple, broccoli, cabbage, grape, and sweet pepper samples. The 
      relative standard deviation from the mean of each sampling size (n = 2(x), where 
      x = 1-6) of randomly selected samples was defined as the UPRL for each sampling 
      size. The estimated UPRLs, which were calculated on the basis of the regulatory 
      sampling size recommended by the OECD Guidelines on Crop Field Trials (weights 
      from 1 to 5 kg, and commodity unit numbers from 12 to 24), ranged from 2.1% for 
      cypermethrin in sweet peppers to 14.6% for cypermethrin in cabbage samples. The 
      percentages of commodity exceeding the maximum residue limits (MRLs) specified by 
      the Japanese Food Sanitation Law may be predicted from the equation derived from 
      this study, which was based on samples of various size ranges with mean residue 
      levels below the MRL. The estimated UPRLs have confirmed that sufficient sampling 
      weight and numbers are required for analysis and/or re-examination of subsamples 
      to provide accurate values of pesticide residue levels for the enforcement of 
      MRLs. The equation derived from the present study would aid the estimation of 
      more accurate residue levels even from small sampling sizes.
FAU - Fujita, Masahiro
AU  - Fujita M
AD  - The Institute of Environmental Toxicology, 4321 Uchimoriya-machi, Joso-shi, 
      Ibaraki 303-0043, Japan.
FAU - Yajima, Tomonari
AU  - Yajima T
FAU - Iijima, Kazuaki
AU  - Iijima K
FAU - Sato, Kiyoshi
AU  - Sato K
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20120423
PL  - United States
TA  - J Agric Food Chem
JT  - Journal of agricultural and food chemistry
JID - 0374755
RN  - 0 (Pesticide Residues)
SB  - IM
MH  - Crops, Agricultural/*chemistry
MH  - *Food Contamination
MH  - Fruit/chemistry
MH  - Japan
MH  - Pesticide Residues/*analysis
MH  - Reproducibility of Results
MH  - Statistics as Topic
MH  - Vegetables/chemistry
EDAT- 2012/04/06 06:00
MHDA- 2012/09/11 06:00
CRDT- 2012/04/06 06:00
PHST- 2012/04/06 06:00 [entrez]
PHST- 2012/04/06 06:00 [pubmed]
PHST- 2012/09/11 06:00 [medline]
AID - 10.1021/jf3001923 [doi]
PST - ppublish
SO  - J Agric Food Chem. 2012 May 9;60(18):4457-64. doi: 10.1021/jf3001923. Epub 2012 
      Apr 23.