A Laboratory Hand book of Urine Analysis And Physiological Chemistry
The book A Laboratory Hand book of Urine Analysis And Physiological Chemistry was written by author Charles George Lewis Wolf Here you can read free online of A Laboratory Hand book of Urine Analysis And Physiological Chemistry book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is A Laboratory Hand book of Urine Analysis And Physiological Chemistry a good or bad book?
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A yel- low halo around the crystal will indicate the presence of lead* This will best be seen by placing the tube on a sheet of white paper. Mercury. — Mercury is always present in the urine of patients undergoing mercurial treatment, and it is of importance in insurance work to be able to detect this element where it is suspected that the applicant has recently been under the influence of the drug. In cases of ptyalism also it will be of value to ascertain whether the mercury is being properly... excreted. Two hundred c.c. of the urine are boiled with 10 grams of zinc dust for ten minutes. The mercury is precipitated on the zinc and amalgamates with it. The zinc dust is filtered oflF, thoroughly washed with hot water, and dried at a low temperature, preferably in a water-oven at 100° C. The zinc dust is introduced into a long and nar- row test-tube, which should be perfectly dried before use. The zinc is shaken well down to the bottom of the tube, and the tube constricted slightly below the middle in the flame of a Bunsen burner, as shown in Fig.
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