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Analytical Methods for Organotins
Historically, analytical methods for organotins have primarily focused on
butyltins (especially tributyltin). However, ORTEPA chemists have worked
to develop and validate methods based on in-house knowledge, scientific
literature, and German standard methods from Deutsches Institut f�r Normung
e.V. (DIN). The analytical methods posted below are applicable to organotin
compounds containing various alkyl groups (i.e., methyl, butyl, or octyl)
and degrees of substitution (i.e., mono-, di-, or tri-), and have been developed
for several matrices (e.g., water, dry animal feed, and air filters).
In most cases, these methods are capable of determining concentrations
of either individual organotins or mixtures of multiple compounds. They
incorporate a single extraction/derivatization step using an organic solvent
and an alkylating agent, and analyses may be conducted by gas chromatography
with flame photometric (GC-FPD), mass spectrometry (GC-MS), or atomic
emission (GC-AED) detection. Additionally, a "total tin" method
using inductively coupled plasma-mass spectrometry (ICP-MS) is also provided.
Each of the methods posted below are available as downloadable *.pdf format
documents.
Extraction Procedures
ORTEPA Method - Extraction of Alkyltin Chlorides from Water
Click
Here to Download
.pdf method document
ORTEPA Method - Extraction of Alkyltin Chlorides from Dry Animal Feed
Click
Here to Download
.pdf method document
Gas Chromatography Analysis
ORTEPA Method - Gas Chromatographic Analysis of Derivatized Alkyltin
Chlorides
Click
Here to Download .pdf
method document
Total Tin Analysis
ORTEPA Method - Total Tin Analysis of Organotin Stabilizers in Water.
Click
Here to Download
.pdf method document
Air Sampling and Analysis
ORTEPA Method - Butyltin Chlorides in Air (Note: this method was developed
and validated for butyltin chlorides only. ORTEPA appreciates the contributions
of ATOFINA Chemicals, Inc. and Clayton Group Services, Laboratory Division).
Click Here to
Download
.pdf method document
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