原文由 xuanleer(xuanleer) 发表:
原文由 砂锅粥(czcht) 发表:
不知安谱的PBB&PBDE混标现在有没有浓度稍高的?之前是1~5μg/mL,浓度低,量又少,这样很多单位都吃不消。
混标有一些的“
比如:CDCT-LA21030500CY, 23种PBB混标 标准品,10 ng/ul于环己烷,1ml
Name | Conc. (mg/l) |
PBB 1 (2-Bromobiphenyl) | 10 |
PBB 2 (3-Bromobiphenyl) | 10 |
PBB 3 (4-Bromobiphenyl) | 10 |
PBB 4 (2,2�-Dibromobiphenyl) | 10 |
PBB 7 (2,4-Dibromobiphenyl) | 10 |
PBB 9 (2,5-Dibromobiphenyl) | 10 |
PBB 10 (2,6-Dibromobiphenyl) | 10 |
PBB 15 (4,4�-Dibromobiphenyl) | 10 |
PBB 18 (2,2�,5-Tribromobiphenyl) | 10 |
PBB 26 (2,3�,5-Tribromobiphenyl) | 10 |
PBB 29 (2,4,5-Tribromobiphenyl) | 10 |
PBB 30 (2,4,6-Tribromobiphenyl) | 10 |
PBB 31 (2,4�,5-Tribromobiphenyl) | 10 |
PBB 38 (3,4,5-Tribromobiphenyl) | 10 |
PBB 49 (2,2�,4,5�-Tetrabromobiphenyl) | 10 |
PBB 52 (2,2�,5,5�-Tetrabromobiphenyl) | 10 |
PBB 53 (2,2�,5,6�-Tetrabromobiphenyl) | 10 |
PBB 80 (3,3�,5,5�-Tetrabromobiphenyl) | 10 |
PBB 101 (2,2�,4,5,5�-Pentabromobiphenyl) | 10 |
PBB 103 (2,2�,4,5�,6-Pentabromobiphenyl) | 10 |
PBB 153 (2,2�,4,4�,5,5�-Hexabromobiphenyl) | 10 |
PBB 155 (2,2�,4,4�,6,6�-Hexabromobiphenyl) | 10 |
PBB 209 (Decabromobiphenyl) |
| 10 |
要是有浓度更高就好了,百灵威有50μg/mL的。
问个问题,为什么混标浓度都那么低?是成本问题还是技术问题?还是其它问题?