[Determination of organotin compounds in plastic products by GC/MS after ethyl derivatization with sodium tetraethylborate].
A simultaneous determination method for 9 organotin compounds in polyvinyl chloride (PVC) and silicone products used as kitchen utensils and food packages was developed using ethyl derivatization with sodium tetraethylborate (NaBEt4). Organotin compounds were extracted with acetone-hexane (3:7) from the samples after acidification and the extract was filtered and concentrated at under 40 degrees C. After centrifugal separation, these compounds were derivatized with 2% NaBEt4 solution and determined by GC/MS. This method was applicable for simple routine analysis. Recoveries of spiked compounds were 49.1-118.1% for 3 PVC products and 88.8-102.2% for a siliconized paper. Monooctyltin, dioctyltin and trioctyltin compounds were found in all PVC food containers at the levels of 123-1,380 micrograms/g, 1,770-13,200 micrograms/g and 6.6-139 micrograms/g, respectively. They also were found in 3 gloves, 5 spouts, 1 hose and 5 pipes. Some PVC products contained monomethyltin, dimethyltin, trimethyltin, monobutyltin and dibutyltin compounds at the levels of 97.3-433 micrograms/g, 96.5-5,120 micrograms/g, 8.5-24.9 micrograms/g, 1.2-852 micrograms/g and 1.2-29.4 micrograms/g, respectively.
Ohno
Hiroyuki
H
Nagoya City Public Health Research Institute: 1-11, Hagiyama-cho, Mizuho-ku, Nagoya 467-8615, Japan.
Suzuki
Masako
M
Nakashima
Shigehito
S
Aoyama
Taiki
T
Mitani
Kazunori
K
D055598:Chemical Phenomena; D002621:Chemistry; D003297:Cooking and Eating Utensils; D018857:Food Packaging; D008401:Gas Chromatography-Mass Spectrometry; D009947:Organotin Compounds / Q000032:analysis*; D010969:Plastics / Q000032:analysis*; D011143:Polyvinyl Chloride / Q000032:analysis; D012828:Silicones / Q000032:analysis
D009947:Organotin Compounds; D010969:Plastics; D012828:Silicones; D011143:Polyvinyl Chloride