9.
Manual Sample Injector and Autoinjector ...................................... 16
9-1.
Structure ..................................................................................... 16
9-2.
Operation of Manual Injector ................................................ 16
9-3.
Autosampler and Autoinjector Setup ................................... 17
10.
Precolumn ............................................................................................ 18
10-1. Types of Precolumn Housing and Line Filters ........................ 18
10-2. Identification of Precolumn Quality....................................... 19
10-3. How to Repack ......................................................................... 20
10-4. Filter Exchange ......................................................................... 21
11.
ECD Operation..................................................................................... 22
11-1. Basics .......................................................................................... 22
11-2. Working Electrode .................................................................... 23
11-3. Applied Potential...................................................................... 23
11-4. Time Constant ........................................................................... 25
11-5. Background Current ................................................................ 25
11-6. If Background Current is High ................................................. 25
11-7. Caution for the Platinum Working Electrode........................ 25
12.
Storage of the System ......................................................................... 26
12-1. Short-term
(A few days to a few weeks) ................................................
26
12-2. Long-term
(more than a few days or a few weeks) ............................
26
13.
Storage of a Standard Sample ......................................................... 27
14.
Regular Maintenance Schedule....................................................... 28
Daily Maintenance.............................................................................. 28
Occasional Maintenance.................................................................. 28
Yearly Maintenance ........................................................................... 28
15.
Troubleshooting ................................................................................... 30
Appendix. A ................................................................................................... 33
