The last lead acid put into bottles. Polyethylene and Atomic absorption spectrophotometry analysis, with a section to collect samples of sediments, he will use a Van veen grab and remove the sample dried at 40° c leads to the Sub with a mixture of perchloric acid, hydrofluoric and hydrochloric acid, and then bring the remaining section to hydrochloric acid, concentrated and then diluted with distilled water, the last volume. 25 ml. then remove the sample solution to measure the Atomic absorption spectrophotometry with a Flame.
การแปล กรุณารอสักครู่..