A new sampling procedure for individual raindrops with volumes of 4 nl -4 p1 is presented. It is demonstrated that analyte concentrations in small volumes can be analysed usin! micro-HPLC and capillary zone electro horesis (CZE). Results for the analysis of cations such as Na', NH4+, K , Mg2+, Ca2', and anions such as Cl-, so4 , NO3 , N S and organic acids are given and discussed.
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