��ˮ��ԭ��ʯī�t��y��

��r�g��2009-02-12 10:46 ��Դ��Ї��h(hu��n)��l�� : ��x��1333

ժ Ҫ��ֻҪ��ʯī��M��m��?sh��)�̎�?ͬ�r��V��w��M��ƺ��m�ăx��l��س��,��ԭ��ʯī�t��y��?sh��)��`��,��_��ˮ�ИI(y��)�y��ָ�˵�Ҫ�󣬽��h�ڹ�ˮ�ИI(y��)��ƏVԓ�y��,��

��һ�N��^ϡ�е�Ԫ��,��Ҫ��ھG��ʯ�V(��X�)�С�┱��빩ˮ�ИI(y��)2000��Ƽ��M��Ҏ(gu��)��е�ˮ��Ŀ,��

��┼��仯��,��M��w��׺�ȫ��գ��ȸߕr��,��ͬ�r�Ҳ��EPA�О��Ҫ�°��֮һ��(y��u)�ȿ��Ⱦ��,��

��҇�Ҏ(gu��)��ˮ��┝�Ȳ��ô��0.2μg/L,��Ŀǰ��(n��i)ֻ��ٔ�(sh��)�ׂ�һ�ˮ˾��Ŀ,��ͨ��ICP��V��y�(��Ϻ�ˮ˾,��ˮ˾),��߀��ɣɫ�؟ɹ�ֹ��ȷ��Xԇ��ֹ��ȷ��y��ȡ—�ɹ�ֹ��ȷ��m�`��^��(ȡ��1L,��͙z�y��0.1μg/L)��,��ֹ��ȷ��t�`��Ȳ��(ȡ��50mL,��͙z�y��10μg/L)��F(xi��n)��ԭ��ʯī�t��y��ˮ�е�΢��,��

1 ԇ򞲿��

1.1 �x��ԇ��

��ԭ��շֹ��Ӌ(��Z-5000)��┿��ꎘO��,��ߜ�ʯī��,��

��⣻┘˜��Һ(��Ҙ��),��(GR),��V(GR)��(AR),��ˮ(�ü�ˮ�C�F(xi��n)��),��

1.2 ԇ򞲽�E

�� |(zh��)��Ȟ�0.40μg/L��┘˜��Һ(��1%��ϡ�),��Դ˞�ĸҺ��Ԅ��M��քeϡጳ�0,��0.05��0.10,��0.20,��0.30��0.40μg/L��ϵ�И˜��Һ��ע��ʯī�t�y��,��

��(j��)ԇ��Ҫ��ȵ�┘˜��Һ,��

�� 5.8gZrOCl2·8H20�ܽ��100mL��ˮ��Ƴ��Һ,��ʯī�ܷ��ԓ��Һ�^ҹ,��Ȼ��ȡ��120��¸��2��4h��b��ʯī�t�в��120��ӟ�60s,��400�� 30s,��2200��ӟ�90s��2800��ӟ�10s,��̎��ʯī��,��

�� ƻ��w��M��Mg(NO3)2��Һ��0.2g��V��100mL��1%��,��

��,�� Ʋ�ͬ��ԇ�l��Μy��0,��0.05,��0.10��0.20,��0.30,��0.40μg/L��ϵ�И˜��Һ��ȡ�

��,�� һ��l��¹��,��t�y��ԇ�Ĝʴ_�ȡ��ܶȼ��,��

��,�� ˮ��x��ɔ_ԇ򞡣

2��Y(ji��)��ӑՓ

2.1 ��ԇ�l��
��ֹ��M��,��0.40 μg/L��┘˜��Һ��ԇ�Ӵ_��ԇ�l��,��уx��l��س��քeҊ��1��2,��

��1 ��уx��l��
��У��ʽ	�z�y��L(nm)	��(mA)	�M�p��(nm)	�M��( μL)	Ӌ�㷽��
��У��	234.9	14	1.3	20	��e��

��2 ��س��
� Ŀ	��A��	�һ��A��	ԭ�ӻ��A��	��ϴ�A��
�ؿط��(��)	80��200	500��600	2 400	2 600
б�r�g(s)	40	10	0	0
��֕r�g(s)	0	20	5	4
��(mL/s)	200	200	10	200

2.2 ʯī�ܵ�̎��

��(j��ng)��(f��)ԇ�l(f��)�F(xi��n),��ʹ�Û]��̎��^��ʯī�ܣ��ʹ��V��Һ��w��M��ˮ�w�е��Ԫ��M�Мy��,��͙z�y��Ҳֻ��0.25μg/L,��_��ˮ�ИI(y��)�z�y�ޑ�(y��ng)��0.2μg/L��Ҫ��,��ʹ�ý�(j��ng)��̎��^��ʯī��V��w��M��y��r,�z�y�`��ȿ��Դ��,��0��0.4μg/L�ĝ�ȷ��(n��i)��Եõ��P(gu��n)��^�õĘ˜��(Ҋ�D1)��

��ɈD1��õľ��Է��̞�A=0.1100×CBe-0.00428,��P(gu��n)ϵ��(sh��)��R=0.9991,��

��ڹ�ˮ�ИI(y��)�Мy�Ԫ�ص�ָ��ֵ�ܵ�(0.2μg/L),��ԭ��ʯī�t��ͨ��M��20��40μL��,��ԘO΢��ԭ�ӻ��A��γ��̼��ʯī�ܱ��˜y��`��,��ͨ�^ʹ��̎��ʯī�ܿ��ڹܱ��γ�̼��䆱��o��,�Ķ��p��cʯī�ܱڵ��,��˜y��`��,ʹ�z�y�޵��0.1μg/L,��ȫ��Ϲ�ˮ�ИI(y��)��ԓ�Ŀ�Ĝy��Ҫ��

2.3 ��ܶ�

��0.10μg/L,��0.40μg/L��┘˜ʘ�Ʒ,��Ϸ��y��ÿ��yһ�θ��y2��ƽ�И�,��10��õ��?sh��)ľ��ܶȜyԇ�Y(ji��)��(Ҋ��3),��

��3 ��ܶȜy��Y(ji��)��

�˜ʝ��(μg/L)	�y��ֵ(μg/L)											SD(μg/L)	RSD(%)
�˜ʝ��(μg/L)	1	2	3	4	5	6	7	8	9	10	ƽ��ֵ	SD(μg/L)	RSD(%)
0.10	0.090	0.085	0.091	0.105	0.110	0.102	0.096	0.108	0.104	0.096	0.099	0.0084	8.48
0.40	0.385	0.394	0.399	0.395	0.410	0.408	0.412	0.400	0.415	0.397	0.402	0.0095	2.36

��ɱ�3��֪ԓ�yԇ��ľ��ܶ��^�ߡ�

2.4 �ʴ_�ȼ��

��քe�ڳ�ɽ��ˮ�S��Դˮ�ͳ��Sˮ(��δ�z��)�м��┘˜��Һ�M�мӘ˻��ԇ�,�Y(ji��)��Ҋ��4,��

��4 �Ә˻��ԇ�Y(ji��)��
��(μg/L)	�y��ֵ(μg/L)								SD(μg/L)	RSD(%)	��(%)
��(μg/L)	ȡˮ�c	1	2	3	4	5	6	ƽ��ֵ	SD(μg/L)	RSD(%)	��(%)
0.10	Դˮ	0.110	0.092	0.095	0.096	0.087	0.102	0.097	0.0080	8.30	97.0
0.10	��Sˮ	0.092	0.094	0.089	0.091	0.094	0.105	0.094	0.0056	5.98	94.2
0.40	Դˮ	0.382	0.390	0.402	0.392	0.387	0.394	0.391	0.0068	1.73	97.8
0.40	��Sˮ	0.396	0.401	0.410	0.412	0.407	0.412	0.406	0.0065	1.61	101.6