Technical Note: Using FIMS to determine mercury content in sewage sludge, sediment and soil samples.

Abstract

Stock standard mercury solution #1, 1000 mg/1, was prepared from Merk Tritisol(R). Stock mercury solutions #2 and #3:10 mg/1 and mg/1 respectively, were prepared by further dilution of the stock standard solution #1. Calibration standards at different mercury levels were prepared from stock solutions #2 and #3 by further dilution in 3% v/v HC1. Calibration standard solutions used for the measurement of sewage samples were 0"00, 5"00, 10"00, 15-00, 20"00, and 30"00 lg/1. Calibration standard solutions used for the measurement of soil and sediment samples were 0"00, 3-00, 5"00, 7"00, and 10"00 tg/1. According to DIN 38 405-E 12, the standard solutions should contain 1% v/v of the stabilizing solution.