RPLC retention of 1,ω-di(alkoxy)-polysulphides |
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| Authors: | Eris Singer H J Möckel |
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| Institution: | (1) Istituto sull'Inquinamento Atmosferico-C.N.R., Area della Ricerca di Roma Via Salaria Km 29, 300-C.P. 10, I-00016 Monterotondo Stazione (Roma), Italy |
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| Abstract: | Summary A simple and reliable method for routine measurement of ammonia in ambient air is described. It is based on the collection of ammonia on H3PO3-coated annular denuders and its subsequent derivatization withm-toluoyl chloride (MTC) in alkaline acetonitrile. The resultingm-toluamide is determined by reversed phase HPLC with UV detection at 230 nm. The limit of dotection is about 0.3 g m–3 for NH3 in air samples collected at 151 min–1 for one hour. |
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| Keywords: | Column liquid chromatography Atmospheric ammonia m-Toluamide derivative Annular denuder |
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