��ˮ�а�]�l(f��)��ЙC��ɫ�V�|(zh��)�V��y��

��r�g��2008-05-09 15:57 ��Դ��Ї�Փ��d�� : �_��,��־�s��ŘI(y��)�� x��1211

��ˮ��ˮˮԴ��ܵ��I(y��)�Uˮ,��r(n��ng)ˎ��û��WƷ�ȸ��N�ЙC��Ⱦ,��ЙC��r(n��ng)ˎ��ЙC��r(n��ng)ˎ,��h(hu��n)��N,��(li��n)��Լ��Ȱ�]�l(f��)��ЙC��Σ��w��y��@Щ��ﳣ�õķ��ǌ��,��ҺҺ��ȡ��s��,��x�ò�ͬ��ɫ�V�ęz�y��քe�y��H�M�r�M��,��Ҵ��ЙC�܄��,��Ʒ̎��s�Ȇ��}��Ľ��˹��ȡ��g�c��|(zh��)(li��n)��(GC/MS)�ķ��,��ͬ�r�y��ˮ��100��N��]�l(f��)��ЙC��,��H�ʴ_�ȸߣ��߀��в��,��Ч�ʸ�,��܄�ʹ��ٵȃ�(y��u)�c��

��1 ��c��

��1��1 ��Ҫԇ�� ˜��|(zh��)(��AccuStandard��˾),��ЙC��r(n��ng)ˎ,��ЙC��r(n��ng)ˎ��h(hu��n)��N,��(li��n)��,��Ȼ��,��˜��|(zh��)��̖�քe�飺M��507A��M��507B,��M��507C,��M��507D,��M��507E,��M��507F��R2��M��525��1��5X,��M��525��4��R��X,��EPA525 Update phthalate Esters Mix,EPA 505/525 Update pesticides Mix B,��Ӌ109�N����ĝ�Ȟ�1000μg/ml,��(n��i)��M��525��2��IS��3�N��,��քe��ʮ밴��(Acenaphthene��d10)��ʮ��밴��(Chrysene��d12)��ʮ밴��(Phenanthrene��d10),��ϵ�y(t��ng)��У��|(zh��)M��525��2��TS��ʮ��(DFTPP),��τ��4��4′��DDT3�N��,��˜ʘ�ӛ��M��525��2��SS��1,��3��׻��2��H��d10��3�N��,��

��1��2 �˜ʘ�Ʒ��

��1��2��1 ��(n��i)�˼��˜ʘ�ӛ��Һ ��Ȟ�50μg/ml�Ķ��ê�d10��밴��d12�ă�(n��i)�˘˜��Һϡ�10��,��ɝ�Ȟ�50��0μg/ml��(n��i)�˹��Һ��ͬ�ӵķ��Ƙ˜ʘ�ӛ��Һ,��(n��i)�˼��˜ʘ�ӛ��Һ��ڰ��4�汣��,��

��1��2��2 GC/MS��У��Һ �ö��ȼ��錢��Ȟ�500μg/ml��ʮ��(DFTPP)��τ�,��4,��4′��DDT��Ɲ�Ȟ�5��0μg/ml�ăx��У��Һ��ڰ��4�汣��,��

��1��2��3 �˜�ϵ�y(t��ng) ��˜��Һ��Ƴɝ�Ȟ�0��00,��0��050��0��10,��0��50,��1��0��2��0μg/ml�˜�ϵ��Һ,��(n��i)��Һ,��ʹ��(n��i)��|(zh��)�ĝ�Ȟ�2��0μg/ml��

��1��3 �x��l��

��1��3��1 �x�� Trace GC Ultra��Polaris Q�x��ɫ�V�|(zh��)�V�x(��Thermo Finnigan��˾),��Xcalibur�|(zh��)�V��(sh��)��(j��)��վ,��ȡ�b�ã�Supelco VISIDRY,��ȡ��Supelco ENVI��18(6ml,0��5g)��N��EVAP�͵��x,��Scientific Industries�u��ʎ��,��

��1��3��2 ɫ�V�l�� ɫ�V��DB��5 MS��ë��ɫ�V��30m×250μm×0��25μm,��d��(��)��1��0ml/min,��,��⻯�Ҝضȣ�280�棬�o��ʽ,��أ��ʼ�ض�45�汣��1min,��30��/min��130�棬��3min,��12��/min��180��,��7��/min��240�棻��12��/min��325��,��5min,��ݔ��ضȣ�300�档

��1��3��3 �|(zh��)�V�l�� x�ӻ��ʽ��Z��x(EI),��70eV,��|(zh��)�V��跶��45��450amu��x��Դ�ضȣ�280��,��΢��(microscan)�Δ�(sh��)��2��,��

��1��4 ��Ʒ̎��c�y��

��1��4��1 ˮ�Ӳɼ� �øɃ��1L��ɫƿ�ɝMˮ�ӣ��s40��50mg��cȥ��,��òɘ�ƿ,��Ʒ��_��Һ��ڱ��4�汣�档��Ʒ�М��,��0��45μm�ĞVĤ�M��^�V,��И�Ʒ��ڲɼ��14d��(n��i)�M��ȡ��ȡҺ�b��]��ƿ,��Ҫ�ܹⲢ��4��,��ȡ��30d��(n��i)��ɷ��ÿ��ƷҪ��һ��F(xi��n)��հ�,��

��1��4��2 ��ȡ (1)���5ml��ȼ��,��5ml��10ml�״��10ml��ˮ��^��ȡ��M�л,�,���r��Ҫ׌�״��ˮ��(Һ�治��픲�),��(2)��ƿȡ1Lˮ��,��6mol/L��}��{(di��o)pH��2,��5ml�״��,��40μl��Ȟ�50μg/ml�ă�(n��i)�˼��ӛ��Һ,��̻�򣬼Ә��ˮ�Н�Ȟ�2��0μg/L,��ˮ��15ml/min��ͨ�^��ȡע,��(3)���õ��x��10minʹ��ȡ��ɡ�

��1��4��3 ϴÓ ��5ml��ϴ1L��ƿ,��ͨ�^��ȡ��M��ռ�ƿ,��5ml��ȼ��ͨ�^��ȡ�M��ϴÓ��M��ͬһ�ռ�ƿ,��ϴÓҺ�õ��ⴵ�ɣ��y��r��200μl��,��u��,��

��1��4��4 �˜��L�� O��ɫ�V�|(zh��)�V�l��ɫ�V�|(zh��)�V�x�{(di��o)��Ѡ�B(t��i),��M��1��0μl,��Ŀ�˻��ķ��e�c��(n��i)�˻��ı�ֵ��˜��L�Ƙ˜��

��1��4��5 ��Ʒ�y�� Ʒ��ԇҺ1��0μl�M��,��c�y��˜�ϵ��ͬ�ėl��M�з��y��,��(n��i)�˷��

��1��5 Ӌ�㹫ʽ ρx=Cx×V1/V2

��ʽ�У�ρx—ˮ�б��y�M�ֺ��,��μg/L,��

��Cx—�yԇҺ�б��y�M�֝�ȣ�μg/ml,��

��V1—�yԇҺ�w�e,��ml��

��V2—ˮ��w�e,��L,��

����2 �Y(ji��)��cӑՓ

��2��1 ��]�l(f��)��ЙC��Ŀ��x��D(�D1) ��D1��ʾ��30min��(n��i)104�N��Ч��x,��M��y��Ҫ��,��

��2��2 DFTPP��x�Ӻ��x��S�Ȝyԇ�Y(ji��)��(��1) ÿ�η��_ʼǰ��ʮ��(DFTPP)�z��GC/MSϵ�y(t��ng)��Ƿ��Ҫ��,��ȡ��Ȟ�5��0μg/ml�ăx��У��Һ1��0μl�M�ӷ��,��x��S�ȵ�ָ��Ҫ��

��2��3 �˜��Pϵ��(sh��) ��о��Ã�(n��i)�˷�,��x��x�Ӷ��,��Y(ji��)��,��z�y��104�N��У�95�N��Pϵ��(sh��)��0��995��,��f��c��x��푑�ֵ��õľ��Pϵ,��Ŀ�˻��Ĝy��

2��4 �Ә˻�� 1��0ˮ��,��Ϙ˜��Һ,��ʹ��M�֝�ȷքe��1��0μg/L��c��Ʒ��ͬ�ķ��ȡ�y��,��Ʒ�ļӘ˻��85%��110%֮�g,��

��2��5 푑��(RF)��ܶ� ��ڲ��Ã�(n��i)�˷��Ȳ�ͬ�rĿ�˻��RFҲ��׃,��RE�ľ��ܶȌ�Ӱ푘�Ʒ�y��ľ��Է��Y(ji��)��Ĝʴ_��,��xȡ0��050��2��0μg/L��(n��i)6��ȵĘ˜ʘ�Ʒ��քe�y��Ŀ�˻��푑��,��Ӌ��푑��ӵ��˜�ƫ��,��Y(ji��)��5�N��푑��˜�ƫ��(RSD)>30%��,��RSD��30%�ԃ�(n��i),��81�NĿ�˻��푑��ӵ�RSD<20%��f��z�y��õľ��ܶ�,��

��2��6 ��͙z�y�� ڷ��N��^��,���Ϙ˘��и��N��`��ȣ��͙z�y��(MDL)��ƽ�Мy��͝�Ȼ�Ϙ˜ʘ�Ʒ,��Ӌ��3��˜ʲ�ķ��ó�,��ȡ��Ȟ�0��20ng/μl��Ϙ˜ʘ�Ʒƽ�Мy��6�Σ�Ӌ��ÿ�N��Ę˜�ƫ��(s),��͙z�y�ޞ�MDL=3s,��Ŀ�˻��ķ��z�y�޷��0��0016��0��21μg/L��M�㡶��ˮ�l(w��i)��Ҏ(gu��)��ˮ��ˮԴˮ��l(w��i)��z�Ҫ��,��

��2��7 ��Ʒ�y�� ñ��y��˽��K,��պͺ��ʡ��r(n��ng)��؅^(q��)300��ˮ�ӣ��104헰�]�l(f��)��ЙC��(��h(hu��n)��N10�,��6�,��ЙC��r(n��ng)ˎ13헡��ЙC��r(n��ng)ˎ10�,��(li��n)��8�,��3헣��݄�54�)�M�Мy��l(f��)�F(xi��n)90%�ı��y�ЙC��<�z��,��ֵ��ע��,��؅^(q��)�Ĳ��ˮ��Йz��˶�h(hu��n)��N�Լ����

��3 С�Y(ji��)

��о��˹��ȡ��g�c��ɫ�V�|(zh��)�V(li��n)�Üy��ˮ�а�]�l(f��)��ЙC��Č�򞷽��,��(sh��)Ŀ�˻��ķ��z��޵��0��01μg/L,��m��ˮ��ˮˮԴˮ�Г]�l(f��)��ЙC��ķ��y��H�ʴ_�ȸ�,��z�y�޵�,��z�y��(sh��)��࣬��ұ��߀��в��,��ݵȃ�(y��u)�c,��ڶ̕r�g��(n��i)�o��Զ��Y(ji��)��ͻ�l(f��)��l(w��i)��¼��ȑ��΄��ˮ�ж��Y��ˮ�|(zh��)�O(ji��n)�y�а�]�l(f��)��ЙC��ٷ��y��,��