title: [Linear discriminate analysis on annual and seasonal characteristics of major cations' profiles of rainwater at Zhoushan rain-sampling spot].
abstract: Rainwater samples were collected at rain-sampling Spot of Zhoushan in 2002-2003. Major cation concentrations (H+, NH4+, K+, Na+, Ca2+, Mg2+) of rainwater sample were determined. The concentration variation range and character were depicted by robust statistic analysis. Linear discriminate analysis (LDA) was used to acquire a further knowledge on the annual and seasonal characteristics of research major cations. Distribution character of samples from sample spot was clearly depicted in the new CA1-CA2 ordinates generated by linear discriminate analysis, and the reasons that caused the outliers in samples were discussed.
authors.affiliation: College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266003, China.
authors.forename: Yu-fei
authors.initials: YF
authors.lastname: Lin
authors.forename: Su-mei
authors.initials: SM
authors.lastname: Liu
authors.forename: Lei
authors.initials: L
authors.lastname: Ji
authors.forename: Yan-feng
authors.initials: YF
authors.lastname: Bi
authors.forename: Jing
authors.initials: J
authors.lastname: Zhang
mesh_terms: D015258:Acid Rain / Q000032:analysis*; D002118:Calcium / Q000032:analysis; D002412:Cations / Q000032:analysis*; D002681:China; D004784:Environmental Monitoring; D016014:Linear Models; D011188:Potassium / Q000032:analysis; D011891:Rain / Q000737:chemistry*; D012621:Seasons; D012964:Sodium / Q000032:analysis
chemical_list: D015258:Acid Rain; D002412:Cations; D012964:Sodium; D011188:Potassium; D002118:Calcium