Results 211 to 220 of about 64,401 (264)
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Se pu = Chinese journal of chromatography
采用乙腈作为提取溶剂,结合超声波辅助萃取和SPE柱进行前处理,建立了超高效液相色谱-串联质谱测定动物源性食品中8种有机磷酸酯(OPEs)的检测方法。准确称取0.5 g样品,用5 mL乙腈超声萃取;冷冻离心后取上清液,用HMR-Lipid SPE柱进行净化,待测分析物经C18 色谱柱分离,在正离子模式下采集,2,2-二(氯甲基)-1,3-丙二醇双[双(2-氯乙基)磷酸酯]酯(V6)采用外标法定量,其他7种化合物(磷酸三乙酯(TEP)、磷酸三丙酯(TPrP)、磷酸三丁酯(TnBP)、磷酸三(2-氯乙基)酯 ...
Yan Tang +9 more
semanticscholar +1 more source
采用乙腈作为提取溶剂,结合超声波辅助萃取和SPE柱进行前处理,建立了超高效液相色谱-串联质谱测定动物源性食品中8种有机磷酸酯(OPEs)的检测方法。准确称取0.5 g样品,用5 mL乙腈超声萃取;冷冻离心后取上清液,用HMR-Lipid SPE柱进行净化,待测分析物经C18 色谱柱分离,在正离子模式下采集,2,2-二(氯甲基)-1,3-丙二醇双[双(2-氯乙基)磷酸酯]酯(V6)采用外标法定量,其他7种化合物(磷酸三乙酯(TEP)、磷酸三丙酯(TPrP)、磷酸三丁酯(TnBP)、磷酸三(2-氯乙基)酯 ...
Yan Tang +9 more
semanticscholar +1 more source
Der beschwerliche We[ç] zurück
Jahrbuch für Germanistische SprachgeschichteZusammenfassung Der Beitrag zeigt anhand der g-Spirantisierung, wie eine Kombination aus mündlichen und schriftlichen Quellen aus den letzten Jahrhunderten die Präsenz eines Merkmals im gesprochenen Hochdeutsch in einem bestimmten (hier: ostfälischen) Sprachraum nachweisen kann.
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Journal of the International Phonetic Association, 1991
The two notes in JIPA 20(2) by Kohler (1990) and Ladefoged (1990) concerning the phonemic status of present-day Standard German ç] and [x] are one of many pieces of evidence that distributional (‘taxonomic’) phonemics has happily survived the thirty-year war with Generative Phonology and its offspring.
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The two notes in JIPA 20(2) by Kohler (1990) and Ladefoged (1990) concerning the phonemic status of present-day Standard German ç] and [x] are one of many pieces of evidence that distributional (‘taxonomic’) phonemics has happily survived the thirty-year war with Generative Phonology and its offspring.
openaire +1 more source