Analytical Sciences

Quantitative Analysis ofTriphenylboron in Environmental Water Samples by Liquid Chromatography/MassSpectrometry

Yoshifumi HANADA,*¹Teizi TANIZAKI,*¹ Minoru KOGA,*²Hiroaki SHIRAISHI,*³ and MitsuyukiSOMA*⁴

*1 Kitakyushu City Institute ofEnvironmental Sciences, Shin-ike 1-2-1, Tobata, Kitakyushu 804-0082,Japan
*2 Prefectural University of Kumamoto, Tsukide 3-1-100, Kumamoto862-8502, Japan
*3 The National Institute for Environmental Studies,Onogawa, Tsukuba, Ibaraki 305-0053, Japan
*4 University of Shizuoka,Yada 52-1, Shizuoka 422-8526, Japan

Liquid chromatography/mass spectrometry(LC/MS) has been applied to the analysis of triphenylboron, which has beenproduced as a substitute for organotin compounds, in water. Althoughcommercial triphenylboron compounds are produced as pyridinyl complexes,the chemical form in water is supposed to be mainly triphenylboron afterliberating pyridine. The triphenylborons were extracted from water with anEmpore^TM C18 extraction disk under acidic condition, and theextracts were introduced directly into a liquid chromatograph-massspectrometer equipped with a negative ion electrospray ionizationinterface. Identification of the compounds was performed with specificions produced from the triphenylboron, and a quantitative analysis wascarried out using the peak areas. The average recoveries from distilledwater, seawater and river water at 0.30 ng/ml were 92.3, 100 and 85.3%,respectively. A detection limit of 0.023 ng/ml for triphenylboron wasachieved.

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