Development, characterization, and testing of a personal passive sampler for measuring inhalation exposure to gaseous elemental mercury

Atomic spectrometry update – a review of advances in environmental analysis

“…The Li mass fractions of these tourmalines vary over three orders of magnitude. Homogeneity tests by SIMS demonstrated that the 7 Li/ 6 Li and 18 O/ 16 O isotope ratios were constant within AE2.2 and AE0.2& (1SD), respectively, at sub-ng test portion masses. Reference values reported for d 18 O, D 17 O and d 7 Li in these tourmaline RMs were based on results for bulk mineral analyses undertaken at several independent laboratories.…”

“…A new passive air sampler (PAS) for Hg 0 consisted 16 of a sulfur-impregnated activated-carbon sorbent contained in the body of a Radello® radial diffusive sampler. It had a sampling uptake rate of 0.07 m 3 per day and operated over a useful 1–10 000 ng m −3 concentration range so reliable time-weighted exposure averages could be determined in either ambient, residential or occupational air settings.…”

“…In a procedure for the sp-ICP-MS/MS analysis of TiO 2 NP in plant digests, O 2 was added 161 to the collision/ reaction cell to overcome spectral interferences on 48 Ti + . Quantication of Ti was based on the 48 Ti 16 O + ion at m/z ¼ 64. The size LOD was 15 nm.…”

Probing the limits of sampling gaseous elemental mercury passively in the remote atmosphere

“…All 186 samplers (154 exposed samplers and 32 field blanks) were assembled at the University of Toronto Scarborough, which means that they were shipped by international courier from Toronto, Canada to Grenoble, France and from there to their Southern hemisphere destination, with the same return journey. For shipping and storage, the samplers were sealed tightly with tape, bagged individually into zip-lock plastic bags 19 and placed in sturdy, foam-lined cases made of either aluminum or hard plastic. No sorbent was added to individual samplers or the case.…”

Mercury methylation and methylmercury demethylation in boreal lake sediment with legacy sulphate pollution

“…Mercury (Hg) pollution is a continuing global-scale problem with serious ecosystem and human health concerns, including well-documented impacts on the central nervous system. [1][2][3][4] The methylmercury (MeHg) form is of greatest concern because it is signicantly more bioaccumulative than inorganic Hg(II) and poses the greatest risk of exposure to consumers of contaminated foods such as sh. 5 Understanding what biogeochemical factors regulate the transformation of inorganic Hg(II) into MeHg is therefore critical in assessing Hg-related risk to human or other mammalian consumers, especially in aquatic ecosystems.…”