Skip to main content

Full text: R&D-Project - Identification of organic compounds in the North and Baltic Seas

chromatograph (Varían, Wallnut Creek, USA) applying a capillary of 15 m length and 
0.25 mm ID coated with a film of 0.25 pm DB5-MS (5 % phenyl-methylpolysiloxane, 
J&W Scientific, Folsom, USA). An injector temperature of 240 °C and Helium as 
carrier gas (flow 2 ml/min, quality 5.0, Carbagas, Switzerland) were used. The 
temperature programme was as follows: 90 °C for 2 min, then with 15 °C/min to 
260 °C, isothermal for 2 min. Splitless injections (splitless time 2 min) of 2.0 pi sample 
volume were carried with a Pal autosampler (CTC Analytics, Zwingen, Switzerland). 
The following EI-MS/MS conditions were applied: Electron energy 70 eV, filament 
current 150 pA, resolution of quadrupole 1 at 0.8 u and of quadrupole 3 at 1.2 u, Ar as 
collision gas at a pressure of 0.12-0.15 Pa (0.9-1.1 mTorr). The selected ions to be 
fragmented as well as further parameters are given in Table 46. The precursor ion m/z 
383 [M-C1] + and the product ion m/z 276 [M-4C1] + were selected for the internal 
standard 1 ’Cio-/ra/7.s'-chlordanc (collision energy -26 V). The dwell time was 50 ms per 
Table 46: Selected precursor and product ions for the determination of selected chlordanes by EI-MS/MS 
with a triple quadrupole mass spectrometer. Important instrument parameters and the masses for the 
internal standard 13 Cio-fran.s-chlordane are also given. 
Precursor ion (m/z) 
Product ion (m/z) 
Collision energy (V) 
Heptachlor, 4,5-DCCD 
cis- heptachlorepoxide 
353 [M-C1] + 
rra /; .v/W.v -C h 1 o rd a n e 
373 [M-ClT 
266 [M-4C1] + 
13 Ci 0 -frani-Chlordane 
383 [M-C1] + 
276 [M-4C1] + 
409 [M-ClT 
300 [M-4C1 ] + 

Note to user

Dear user,

In response to current developments in the web technology used by the Goobi viewer, the software no longer supports your browser.

Please use one of the following browsers to display this page correctly.

Thank you.