Dynamic landscape of multi-elements in PM2.5 revealed by real-time analysis

Atomic spectrometry update – a review of advances in environmental analysis

“…This novel approach, together with TEM analysis of particles collected on impactor samplers, assisted in identifying the sources of air pollution episodes that contained metallic particles. In a similar study, the elements As, Cd, Cs, Cu, Fe, Mg, Mn, Pb, Rb, Sn, Tl and V in PM 2.5 could be determined 39 with LODs of 0.001-6.30 ng m −3 and a temporal resolution of 3.3 min. Calibrant metallic aerosols containing Cr, Mo and W were produced by a spark generator.…”

“…The 40 Ar/ 39 Ar geochronometer relies on the co-irradiation of samples with neutron-uence (or ux) monitors of known age. Biotite is oen used as a primary monitor because it is difficult to fully degas argon from the otherwise preferable sanidine melts.…”

“…Biotite is oen used as a primary monitor because it is difficult to fully degas argon from the otherwise preferable sanidine melts. The potential of a rst-principles method to calibrate 40 Ar/ 39 Ar neutron-uence mineral monitors was illustrated 222 by measuring 40 Ar abundances using an Absolute Quantities of Argon pipette system and combining these with existing 40 K abundance data. Ages for HD-B1 and MD2 biotite uence monitors were calculated and combined with intercalibration data for HD-B1 and Fish Canyon sanidine to determine the 40 Ar/ 39 Ar age of Fish Canyon sanidine.…”

“…The potential of a rst-principles method to calibrate 40 Ar/ 39 Ar neutron-uence mineral monitors was illustrated 222 by measuring 40 Ar abundances using an Absolute Quantities of Argon pipette system and combining these with existing 40 K abundance data. Ages for HD-B1 and MD2 biotite uence monitors were calculated and combined with intercalibration data for HD-B1 and Fish Canyon sanidine to determine the 40 Ar/ 39 Ar age of Fish Canyon sanidine. The SK01 sanidine RM was analysed 223 at three different laboratories to test its homogeneity and 40 Ar/ 39 Ar age consistency.…”

“…Ages for HD-B1 and MD2 biotite uence monitors were calculated and combined with intercalibration data for HD-B1 and Fish Canyon sanidine to determine the 40 Ar/ 39 Ar age of Fish Canyon sanidine. The SK01 sanidine RM was analysed 223 at three different laboratories to test its homogeneity and 40 Ar/ 39 Ar age consistency. Incremental heating of 5 mg aliquots gave a weighted mean age of 27.58 ± 0.06 Ma (95% condence level).…”