By steven on Sunday, August 24, 2003 - 10:56 pm:
Hi,
Currently, our R&D lab is trying to set up a PCB analysis method. Therefore, Just would like to check anyone done PCB quantification using GCMSD capillary column in transfomer oils?? I did manage to get one article,\ but that method is using pack column. Pls let me know if you have any opinion about PCB quantification analysis,e.g. do we need to quantitate each and every congener (209 congener)??. If not, is there any alternatives?? . Would really appreciate if anybody can guide us.\ Thank you very much.
Regards,
Tan
By Anonymous on Saturday, September 27, 2003 - 06:04 am:
hi tan,
quantitate pcb28, pcb52, pcb101, pcb138, pcb156 and pcb180.
The PCB-content is the sum of the 6 kongenere multiplicatetd by 5.
This is according to the german DIN standard.
best regards
By Anonymous on Monday, September 29, 2003 - 12:13 pm:
Hi Tan,
Are you analyzing PCB arochlors specific or congeners specific? DB5-30m ms column (J&W)is the prefer column to use for gc/msd. First dilute the transformer oil in hexane or isooctane, try 100X. Run the dilution against pcb aroclors (500ng/ml), further dilute the transformer oil sample if the pcbs concentration are too high. If the sample is too dirty, cleanup (spe-florisil) may be needed to eliminate artifacts which perhaps interfere with PCBs.
Good luck