Asia Contract Laboratory needed for PAH detection in samples of carbon black (CAS # 1333-86-4). PAH elements determination under the long extraction method (36-48hrs) (i.e. Soxhlet toluene extraction on the carbon black in nitrogen atmosphere followed by quantification of the individual PAHs by GC-MS). The method can be similar to ASTM D8143 Standard Test Method for Determination of the EU-8 List of PAH Compounds in Carbon Black or ASTM D7771 Standard Test Method for Determination of Benzo-a-Pyrene (BaP) Content in Carbon Black with extended extraction time and adjusting the first or the second method for 18 PAH elements.
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