Determination of bromide ion residues in broccoli after fumigation with methyl bromide by nonsuppressed ion-chromatography.
A nonsuppressed ion chromatography method using conductivity detection was performed to determine the concentration of bromide ions in broccoli following fumigation with methyl bromide (MB). After fumigation by MB with concentration up to 40 g/m3, bromide residue (BR) was considerably increased from the trace amount on unfumigated broccoli to about 12 ppm on fumigated broccoli. For probing the location of BR, broccoli was divided into stems and florets. The BRs were measured separately, and the results indicated that BRs only appear in the florets of broccoli.
Huang
Hung-Chang
HC
National Chung-Hsing University, Department of Chemical Engineering, Taichung 402, Taiwan, ROC.
Lai
Shu-Fen
SF
Liu
Yung-Chuan
YC
Chen
Hon-Yi
HY
Tu
Wu-Chun
WC
D001937:Brassica / Q000378:metabolism*; D001965:Bromides / Q000032:analysis / Q000737:chemistry; D002138:Calibration; D002845:Chromatography; D002852:Chromatography, Ion Exchange / Q000379:methods*; D004784:Environmental Monitoring; D005504:Food Analysis / Q000379:methods*; D005506:Food Contamination; D005651:Fumigation; D006842:Hydrocarbons, Brominated / Q000032:analysis / Q000494:pharmacology*; D007300:Insect Control; D007306:Insecticides; D007477:Ions / Q000032:analysis*; D010573:Pesticide Residues; D015203:Reproducibility of Results; D017670:Sodium Compounds / Q000032:analysis / Q000737:chemistry; D013997:Time Factors
D001965:Bromides; D006842:Hydrocarbons, Brominated; D007306:Insecticides; D007477:Ions; D010573:Pesticide Residues; D017670:Sodium Compounds; C005218:methyl bromide; C027938:sodium bromide