Loss and recovery of mercury from sea water during storage

Sanemasa, Isao; Deguchi, Toshio; Urata, Kohei; Tomooka, Jo; Nagai, Haruka

doi:10.1016/s0003-2670(01)82277-7

Cited by 16 publications

(1 citation statement)

References 9 publications

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“…By using 203Hg, Lo and Wai (1975) measured a volatile loss (negligible adsorption loss) of mercury of 16 percent after 21 days of storage in polyethylene when acidified to a pH of 0.5 with HNO3. Sanemasa, et al (1976) preserved a 1-ig/L solution of mercury for 4 months without loss by adding HNO3 to achieve a 0.1-M concentration (pH = 1.0). Moreover, mercury lost from untreated solutions was quantitatively recovered by acidification with HNO3.…”

Section: Nitric Acidmentioning

confidence: 99%

PRESERVATION OF SAMPLES FOR DISSOLVED MERCURY¹

Hamlin

1989

J American Water Resour Assoc

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Water samples for dissolved mercury require special treatment because of the high chemical mobility and volatility of this element. Widespread use of mercury and its compounds has provided many avenues for contamination of water. Two laboratory tests were done to determine the relative permeabilities of glass and plastic sample bottles to mercury vapor. Plastic containers were confirmed to be quite permeable to airborne mercury, glass containers were virtually impermeable. Methods of preservation include the use of various combinations of acids, oxidants, and complexing agents. The combination of nitric acid and potassium dichromate successfully preserved mercury in a large variety of concentrations and dissolved forms. Because this acid‐oxidant preservative acts as a sink for airborne mercury and plastic containers are permeable to mercury vapor, glass bottles are preferred for sample collection. To maintain a healthy work environment and minimize the potential for contamination of water samples, mercury and its compounds are isolated from the atmosphere while in storage. Concurrently, a program to monitor environmental levels of mercury vapor in areas of potential contamination is needed to define the extent of mercury contamination and to assess the effectiveness of mercury clean‐up procedures.

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Section: Nitric Acidmentioning

confidence: 99%