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distinctions between these terms: Specificity: A procedure to measure quantitatively a physicochemical parameter or functional group of one or more analytes in the sample matrix. Selectivity: A procedure to detect qualitatively the analyte in the presence of components that may be expected to be present in the sample matrix. Put another way, specificity is the ability of a non-separative method to distinguish between different compounds (e.g. in a titrimetric method this might be based upon the presence or absence of titratable functional groups or in a UV method the differences in the UV spectra of the various compounds in a mixture) and selectivity is the ability of a separative method to resolve different compounds. Ñ¡ÔñÐÔ£¨selectivity£©ÊÇÖ¸ÔÚÑùÆ·½éÖÊÖÐÓÐÆäËû×é·Ö¹²´æÊ±¸Ã·ÖÎö·½·¨¶Ô¹©ÊÔÎïÖÊ׼ȷ¶ø×¨ÊôµÄ²â¶¨ÄÜÁ¦¡£ רÊôÐÔ£¨specificity£©ÊÇÖ¸Ò»ÖÖ·½·¨½ö¶ÔÒ»ÖÖ·ÖÎö³É·Ö²úÉúΨһÐźš£ Ñ¡ÔñÐÔÔò¿É¶Ô¶àÖÖ»¯Ñ§³É·Ö²úÉú²»Í¬ÏìÓ¦£¬¶øÖ÷Òª³É·ÖµÄÏìÓ¦¿ÉÓëÆäËüÏìÓ¦Çø·Ö¡£ ËùÒÔÑ¡ÔñÐÔÊÇÖ¸¸Ã·¨ÓÃÓÚ¸´ÔÓÑùÆ··ÖÎöʱÏ໥¸ÉÈų̶ȵÄÁ¿¶È¡£ ÒÔÉÏÊÇ´Ó±ð´¦ÒýÓùýÀ´µÄ£¬Ï£ÍûÓÐËù°ïÖú¡£ |

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