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1. ÒÇÆ÷¼ò½é
ICP-MS 2000BÊÇ9001cc½ðɳÒÔ³ÏΪ±¾×ÔÖ÷Ñз¢µÄµç¸ÐñîºÏµÈÀë×ÓÌåÖÊÆ×ÒÇ£¬¸ÃÒÇÓþßÓÐѸËٶȸߡ¢¼ì³öÏ޵͡¢ÎȹÌÐԺá¢ÏßÐÔ¹æÄ£¹ã¡¢ÖÊÆ××ÌÈÅСµÈÌص㣬¿ÉÓÃÓÚÇéÐμà²â¡¢Ê³ÎïÇå¾²¡¢Ò½Ò©¼°ÐÄÀíÆÊÎö¡¢Ê¯ÓÍ»¯¹¤µÈÖÚ¶àÁìÓò¡£
ͼ1. ICP-MS2000Bµç¸ÐñîºÏµÈÀë×ÓÌåÖÊÆ×ÒÇÍâ¹Ûͼ
2. ²âÊÔÔÀí
ÍÁÈÀºÍ³Á»ýÎïÑùÆ·¾Ïû½âºó£¬ÊÔÑùÓÉÔØÆø´øÈëÎí»¯ÏµÍ³Îí»¯£¬ÒÔÆøÈܽºÐÎʽ½øÈë¸ßεÈÀë×ÓÌ壬³ä·ÖÕô·¢¡¢½âÀë¡¢Ô×Ó»¯ºÍµçÀ룬ת»¯³ÉµÄ´øµçºÉÀë×Ó¾Àë×Ó´«Êäϵͳ½øÈëÖÊÆ×ÒÇ£¬Æ¾Ö¤Àë×ÓµÄÖʺɱȾÙÐÐÊèÉ¢²¢¶¨ÐÔ¡¢¶¨Á¿ÆÊÎö¡£
3. ʵÑ鲿·Ö
3.1ʵÑéËùÓÃ×°±¸¼°ÊÔ¼Á
ICP-MS2000B(9001cc½ðɳÒÔ³ÏΪ±¾)£»
΢²¨Ïû½âÒÇ(WX-8000£¬ÉϺ£ÒÙÒ¢)£»
¸ÏËáÒÇ£¨ÉϺ£ÒÙÒ¢£©£»
ʵÑéÓó¬´¿Ë®µç×èÂÊ´ï18.25M¦¸¡¤cm£¨Merck Millipore£©£»
65%ÏõËᣬ37%ÑÎËᣨG.R£¬Scharlau£©£»
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ÔªËرê×¼ÈÜÒº(10mg/L£¬Inorganic Ventures)¡£
3.2 ÑùÆ·Ç°´¦Öóͷ£
¸÷³ÆÈ¡0.1gÍÁÈÀ¼°Ë®Ïµ³Á»ýÎï±êÑùÖÁ¾ÛËÄ·úÒÒϩ΢²¨Ïû½â¹ÞÖУ¬¼ÓÉÙÁ¿µÄ³¬´¿Ë®Èóʪºó£¬¼ÓÈë9mLÏõËáºÍ3mLÑÎËá¡£Ô¤·´Ó¦20·ÖÖӺ󣬼ӸÇÅ¡½ôÏû½â¹Þ£¬Í¬Ê±×öÑùÆ·¿Õȱ¡£Æ¾Ö¤±í1µÄÉýγÌÐò¾ÙÐÐÏû½â£¬´ýÏû½âÍê³ÉºóÀäÈ´ÖÁÊÒΣ¬¼ÓÈë3mLÇâ·úËᣬÔÚµçÈÈ°åÉÏ200¡æ¾ÙÐзɹ衣·´Ó¦Ô¼40minºó£¬ÔÙ¼ÓÈë1.5mL¸ßÂÈËᣬÔÚ¸ÏËáÒÇÉÏ180¡æ¾ÙÐиÏËá´¦Öóͷ££¬Ö±ÖÁ°×ÑÌ£¬ÄÚÈÜÎï³Ê²»Á÷¶¯×´Ì¬£¬È¡ÏÂÉÔÀ䣬ÓÃÉÙÁ¿ÏõËá³åÏ´Ïû½â¹ÞÄÚ±Ú£¬Ê¹ÓÃÓàÎÂÏûÈÚ¸½ÔÚÏû½â¹ÞÄڱڵIJÐÔü¡£Ó󬴿ˮϴåªÏû½â¹ÞÄÚ±ÚÖÁÉÙÈý´Î£¬½«Ïû½âҺתÒÆÖÁ 100 mL ÈÝÁ¿Æ¿ÖУ¬Ñ¡ÓÃîî¡¢ïª×öÄڱ꣬ͬʱ½«ÑùÆ·ºÍÑùÆ·¿ÕȱÖл®·Ö¼ÓÈë10?g/Lî請ìÏýÄڱ꣬Óó¬´¿Ë®¶¨ÈÝÖÁ¿ÌÏߣ¬Ò¡ÔÈÒÔ´ýÆÊÎö¡£
±í1 . ΢²¨Ïû½âÉýγÌÐò
|
ÉýÎÂʱ¼ä/min
|
Ïû½âζÈ/¡æ
|
¼á³Öʱ¼ä/min
|
|
5
|
120
|
3
|
|
3
|
160
|
3
|
|
3
|
180
|
25
|
3.3 ±êÒºÉèÖÃ
½ÓÄÉÖð¼¶Ï¡Ê͵ķ½·¨£¬ÅäÖƽéÖÊΪ2%ÏõËáµÄ¶àÔªËرê×¼»ìÏýÈÜÒºÓÚһϵÁÐ100 mL ÈÝÁ¿Æ¿ÖУ¬Ñ¡ÓÃîî¡¢ïª×öÄڱ꣬ÄÚ±êŨ¶ÈΪ10?g/L£¬Óó¬´¿Ë®¶¨ÈÝÖÁ¿Ì¶È²¢Ò¡ÔÈ¡£ÅäÖÆŨ¶ÈÈç±í2Ëùʾ¡£
±í2. ¸÷ÔªËرê×¼ÇúÏßŨ¶È£¨?g/L£©
|
Ôª ËØ
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±êÒº1
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±êÒº2
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±êÒº3
|
±êÒº4
|
±êÒº5
|
±êÒº6
|
|
9Be¡¢121Sb¡¢238U
|
0.5
|
1.0
|
5.0
|
10.0
|
20.0
|
50.0
|
|
52Cr¡¢59Co¡¢60Ni¡¢65Cu¡¢208Pb
|
5.0
|
10.0
|
20.0
|
50.0
|
100
|
200
|
|
114Cd
|
0.1
|
0.5
|
1.0
|
2.0
|
5.0
|
10.0
|
±¸×¢£ºÆäÖÐ114CdºÍ208Pb½ÓÄÉ×ÌÈÅ·½³Ì¾ÙÐÐУÕý£¬114Cd=114Cd×Ü-0.027*118Sn;208Pb=206Pb£«207Pb£«208Pb¡£
3.4 ÒÇÆ÷²ÎÊý
½ÓÄÉ10¦Ìg/L Li ¡¢Co¡¢
In¡¢
Ce¡¢
Uµ÷гҺ¶ÔÒÇÆ÷¾ÙÐÐÓÅ»¯£¬Ëù»ñµÃµÄÒÇÆ÷²ÎÊýÈçÏ£º
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3.5 ʵÑéÊý¾Ý
´ýÒÇÆ÷Îȹ̺󣬶ÔÑùÆ·¿ÕȱÈÜҺƽÐвⶨ8´Î£¬ÅÌËã8´Î²âÊÔЧ¹ûµÄ±ê×¼Îó²îSD£¬ÒÔ3*SD/K(KΪ±ê×¼ÇúÏßбÂÊ)¶ÔÓ¦µÄŨ¶ÈΪҪÁì¼ì³öÏÞ£»Í¬Ê±¶ÔÍÁÈÀ¼°³Á»ýÎï±êÑù¾ÙÐÐÈý´ÎƽÐвâÊÔ£¬ËùµÃЧ¹ûÈç±í3¡£
±í3. ¼ì³öÏÞ¡¢±ê×¼ÎïÖʲⶨֵ¼°Ï¸Ãܶȣ¨n=3£©
|
ÔªËØ
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ÒªÁì¼ì³öÏÞ(ng/L)
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GBW07407
(GSS-7)
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ϸÃܶȣ¨%£©
|
GBW07312
(GSD-12)
|
ϸÃܶȣ¨%£©
|
|
±ê×¼Öµ£¨mg/kg£©
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²â¶¨Öµ£¨mg/kg£©
|
±ê×¼Öµ£¨mg/kg£©
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²â¶¨Öµ£¨mg/kg£©
|
|
9Be
|
8.9
|
2.8¡À0.6
|
2.92
|
4.42
|
8.2¡À0.7
|
8.28
|
1.44
|
|
52Cr
|
295.0
|
410¡À23
|
392.89
|
0.26
|
35¡À3
|
34.90
|
0.37
|
|
59Co
|
891.4
|
97¡À6
|
95.04
|
2.60
|
8.8¡À0.7
|
9.00
|
0.79
|
|
60Ni
|
40.3
|
276¡À15
|
287.76
|
0.25
|
12.8¡À1.3
|
12.48
|
0.42
|
|
65Cu
|
40.4
|
97¡À6
|
100.76
|
2.81
|
1230¡À33
|
1231.16
|
0.23
|
|
114Cd
|
7.8
|
0.08¡À0.02
|
0.070
|
8.32
|
4.0¡À0.3
|
4.23
|
0.36
|
|
121Sb
|
21.7
|
0.42¡À0.09
|
0.46
|
5.75
|
24¡À3
|
26.91
|
0.50
|
|
208Pb
|
25.1
|
14¡À3
|
12.31
|
1.87
|
285¡À1
|
275.33
|
0.49
|
|
238U
|
17.8
|
2.2¡À0.4
|
2.18
|
1.65
|
7.8¡À0.7
|
7.73
|
0.56
|
4. ½áÂÛ
½ÓÄÉ΢²¨Ïû½â·¨£¬ÓÃICP-MS
2000B²â¶¨ÁËÍÁÈÀºÍˮϵ³Á»ýÎïÖÐBe¡¢Cr¡¢Co¡¢Ni¡¢Cu¡¢Cd¡¢Sb¡¢Pb¡¢U 9ÖÖÖؽðÊôÔªËØ£¬ÒªÁì¼ì³öÏÞÔÚ7.8ng/L-891.4ng/LÖ®¼ä£¬²â¶¨ÖµÓëÖ¤Êé±ê×¼ÖµÎǺϣ¬ÇÒÖظ´ÐÔÓÅÒ졣ʵÑéЧ¹ûÅú×¢¸ÃÒªÁì¼ì³öÏ޵ͣ¬²âÊÔЧ¹û׼ȷ£¬¿ÉÒÔÖª×ãÍÁÈÀºÍˮϵ³Á»ýÎï¶àÔªËØ׼ȷ¡¢¿ìËÙÆÊÎöµÄÒªÇó¡£
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