けい光X線法による汚泥中の金属の定量に関する基礎的研究ならびに甲府市内河川,下水道関係汚泥の分析例

概要

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Some pretreatments as drying and ashing, and X-ray fluorescent analysis were studied, and applied to a survey of metal contamination in river sludges, sewage treatment sludges and so on. Thermo-gravimetric analysis of some typical samples were carried out by use of a magnetic bumper type thermobalance, and the drying and ashing temperatures, 220℃ and 600℃ respectively, were decided from the thermo-gravimetric curves. Known amounts of the standard solutions of the elements to be determined were added into 5g of the ashed sample, mixed, dryed and mixed. The prepared sample as it is, was introduced into the sample holder covered with Myler film, and analyzed by the chart-recording technique using a Philips X-ray fluorescent spectrometer. The relationship between the intensities and the amounts was linear of any element, but the slope was not always same for the same element in different samples. A number of the samples taken in Kofu-city were analyzed by a simplified addition method for a survey of metal contamination; the elements of Zr, Sr, Pb, Zn, Cu, Ni, Fe, Mn, Cr, Ba, Bi, and so on, were determined, and such the light elements as Ca, K, Ti, Cl and S were also detected with strong intensities. The detail and discussion are given together with 11 tables and 11 figures.
山梨大学の論文