Excerpt from Lead and Its Compounds: Lead, Lead Carbonate, Basic, Litharge, White Lead, Sublimed, Lead Arsenate, Lead Sulfide, Tetraethyl Lead, Orange Mineral, General Information, Industrial Health Aspects, Industries and Occupations, Selected Abstracts, Selected ReferencesThe use of hydroxylamine in the initial extraction prevents the oxida tion of the dithizone and permits the elimination of the second extraction step of the Hubbard method.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully, any imperfections that remain are intentionally left to preserve the state of such historical works.