Method for measuring tetraethyl lead and total lead in organic solvents

摘要: Lead (Pb) contamination is a nationwide public health problem which prevalent among children in urban metropolitan areas. The source of Pb due mostly to emissions from vehicular traffic using leaded gasoline. alkyl species used by automobile-related industries include tetraethyl (TEL), tetramethyl Pb, triethylmethyl dimethyldiethyl and trimethylethyl compounds. All these compounds have been as antiknock agents provided convenient inexpensive means enhance octane rating for Use gasoline was almost global more than 50 years during 1925 1975. amount released automobile exhaust that time accounted half the total yearly pollution entire earth. Although only Pb-free may now be an fuel US, still both aviation many other countries. Extensive use additives has made perhaps most widely distributed toxic heavy metal environment. concern about content subsurface environment requires method determine contents accurate not demanding ofmore » time, technique, or special equipments. currently American Society Testing Materials (ASTM) Standard Method D3237 consuming, expensive, tedious compared presented this article. objective study develop simple measure TEL well organic solvents ICI digestion method. Two types samples were used: (1) gasoline, (2) hexane. In additional, experiment also conducted verify conversion with above procedures actually inorganic Pb[sup +2] mixture intermediate TREL DEL are highly water soluble.« less