Numerous studies have revealed an association between particulate matter (PM) and emergency room (ER) visits, although few studies have investigated the association between health and PM components. The present study evaluated the associations of ER visits for cardiovascular and respiratory diseases with PM2.5 components, including organic carbon (OC), elemental carbon (EC), and ion species (SO...

In this study, the water-soluble inorganic ions (WSIIs) composition of fine particulate matter (PM2.5) was measured in northern Nanjing city from 2015 to 2021. NH4+, NO3− and SO42− concentrations dominated total WSIIs (Na+, K+, Mg2+, Ca2+, Cl−, SO42−), accounting for 87.8%. The nitrate with highest average concentration among all 11.0 μg·m−3. Total were higher winter lower summer, levels Decemb...

本研究は、ケイ酸カルシウム水和物（C-S-H）の硫酸イオン（SO42－）収着および溶出性能を実験により評価し、その際のC-S-Hの化学的変化、具体的には固相組成および原子結合状態の変化を明らかにすることを目的として、合成C-S-Hを用いてSO42－の収着および溶出試験を実施した。その結果、Na2SO4とK2SO4のいずれを用いた場合でも、C-S-HのC/S比が高くなるとともにSO42－の収着量が増大した。また、C-S-Hに収着したSO42－は、Na＋が存在する高SO42－濃度下ではGypsum、K＋が存在する高SO42－濃度下ではSyngeniteとして固定化されることを明らかにした。さらに、上記の鉱物として固定された場合と、低SO42－濃度で鉱物として固定されていない場合のいずれについても、C-S-Hに収着したSO42－は溶出可能であるものと考えられた。

The SLC4A1/AE1 gene encodes the electroneutral Cl(-)/HCO(3)(-) exchanger of erythrocytes and renal type A intercalated cells. AE1 mutations cause familial spherocytic and stomatocytic anemias, ovalocytosis, and distal renal tubular acidosis. The mutant mouse Ae1 polypeptide E699Q expressed in Xenopus oocytes cannot mediate Cl(-)/HCO(3)(-) exchange or (36)Cl(-) efflux but exhibits enhanced dual ...

Ice wedges are a characteristic ground ice feature in permafrost regions that form primarily from the meltwater of seasonal snowpack. Ice-wedge oxygen and hydrogen stable isotopes have been used winter paleotemperature reconstructions; however, until recently, ion geochemistry has rarely analyzed as potential paleoclimate proxy. This is greatest for located coastal regions, where marine aerosol...

The total suspended particulate (TSP) samples were collected from April 2013 to April 2014 at the urban location of Pokhara valley in western Nepal. The major aims were to study, quantify, and understand the concentrations and variations of TSP and major water-soluble inorganic ions (WSIIs) in the valley with limited data. The annual average TSP mass concentration was 135.50 ̆ 62.91 μg/m3. The a...

By analyzing the mass concentrations and compositions of atmospheric PM2.5 in Shaoxing from December 2019 to February 2020, characteristics carbon-containing components, water-soluble ions metal elements were obtained. NO3−, OC, SO42− NH4+ main components winter. The OC/EC ratio was 3.27, which proved existence SOC. proportion SOC OC 47.3%, showed that secondary sources made a significant contr...

The objective of the present study is to investigate the effects of irrigation water salinity,cow manure levels and different planting methods on ions variation in soil and their uptake bysaffron. A split-split plot arrangement was conducted in a randomized complete block designwith irrigation water salinity levels (0.45 (fresh water, S1), 1.0 (S2), 2.0 (S3) and 3.0 (S4) dS m-1)as the main plot...