title: Seasonal variation and factors influencing perchlorate in water, snow, soil and corns in Northeastern China.
abstract: Seasonal variation and influencing factors of perchlorate in snow, surface soil, rain, surface water, groundwater and corn were studied. Seven hundreds and seventy samples were collected in different periods in Harbin and its vicinity, China. Perchlorate concentrations were analyzed by ion chromatography-electrospray mass spectrometry. Results indicate that fireworks and firecrackers display from the Spring Festival to the Lantern Festival (February 2, 2011-February 17, 2011) can result in the occurrence of perchlorate in surface soil and snow. Perchlorate distribution is affected by wind direction in winter. Melting snow which contained perchlorate can dissolve perchlorate in surface soil, and then perchlorate can percolate into groundwater so that perchlorate concentrations in groundwater increased in spring. Perchlorate concentrations in groundwater and surface water decrease after rainy season in summer. Groundwater samples collected in the floodplain areas of the Songhua River and the Ashi River contained higher perchlorate concentrations than that far away with the rivers. The corns have the ability to accumulate perchlorate.
authors.affiliation: State Key Laboratory of Urban Water Resource and Environment of Harbin Institute of Technology, Harbin 150090, China.
authors.forename: Long
authors.initials: L
authors.lastname: Ye
authors.affiliation: State Key Laboratory of Urban Water Resource and Environment of Harbin Institute of Technology, Harbin 150090, China. Electronic address: youhong@hit.edu.cn.
authors.forename: Hong
authors.initials: H
authors.lastname: You
authors.affiliation: State Key Laboratory of Urban Water Resource and Environment of Harbin Institute of Technology, Harbin 150090, China.
authors.forename: Jie
authors.initials: J
authors.lastname: Yao
authors.affiliation: State Key Laboratory of Urban Water Resource and Environment of Harbin Institute of Technology, Harbin 150090, China.
authors.forename: Xi
authors.initials: X
authors.lastname: Kang
authors.affiliation: State Key Laboratory of Urban Water Resource and Environment of Harbin Institute of Technology, Harbin 150090, China.
authors.forename: Lu
authors.initials: L
authors.lastname: Tang
mesh_terms: D002681:China; D002852:Chromatography, Ion Exchange; D060587:Groundwater / Q000737:chemistry*; D013058:Mass Spectrometry; D010472:Perchlorates / Q000032:analysis* / Q000302:isolation & purification; D045483:Rivers / Q000737:chemistry; D012621:Seasons; D012914:Snow / Q000737:chemistry*; D012989:Soil Pollutants / Q000032:analysis* / Q000302:isolation & purification; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000302:isolation & purification; D003313:Zea mays / Q000737:chemistry* / Q000378:metabolism
chemical_list: D010472:Perchlorates; D012989:Soil Pollutants; D014874:Water Pollutants, Chemical; C494474:perchlorate