主题：【讨论】到底50325-2001中的活性炭是指哪种类型？

各位：
  在国标50325-2001中附录B里室内空气中苯的测定中有关活性炭吸附管的，只提了一句“内装100mg椰子壳活性炭吸附剂”，我想问各位，这个活性炭到底是哪一种类呢？


1. Carbotrap C(TM) (20-40 mesh) / Carbopack C(TM) (60-80 mesh) /

2. Tenax TA(TM) or GR(TM) (range of mesh sizes)

3. Carbotrap(TM) (20-40 mesh) / Carbopack B(TM) (60-80 mesh) / GCB1
4. Carbopack X(TM) (40/60 and 60/80 mesh) / Carbotrap X(TM) (20/40 mesh)

5. Carbograph 5TD (various mesh sizes)
6. Chromosorb 102(TM) (range of mesh sizes available)

7. Porapak Q (range of mesh sizes available)
8. Porapak N (range of mesh sizes available)
9. HayeSep D (range of mesh sizes available)
10. Chromosorb 106™ (range of mesh sizes available)
Sorbent Strength:                            Medium
Specific Surface Area (m2/g):                  ~750
Approximate analyte volatility range:          n-C5 to n-C12
                                            Boiling point 50°C to 200°C
Example Analytes:                        Hydrocarbons, benzene, volatile
oxygenated compounds
Sorbent Maximum Temperature:          225°C to 250°C
Recommended Conditioning Temperature: 225°C to 250°C
Recommended Desorption Temperature:  No higher than 200°C
Notes:                                  High artefacts (=10 ng)
For trace level analysis condition at
225°C, desorb sample tubes no
higher than 200°C to reduce
background Hydrophobic
Inert – suitable for labile compounds
11. Spherocarb™ / UniCarb™ (60 - 80 mesh only)
Sorbent Strength:                            Strong
Specific Surface Area (m2/g):                  ~1200 – also operates on molecular sieve principle
Approximate analyte volatility range:          n-C3 to n-C8
                                            Boiling point -30°C to 150°C
Example Analytes:                        Very volatile compounds e.g. VCM,
ethylene oxide, carbon disulphide,
dichloromethane, chloromethane.
Volatile polar compounds e.g.
methanol, ethanol, acetone
Sorbent Maximum Temperature:          >400°C
Recommended Conditioning Temperature: 350°C to 400°C
Recommended Desorption Temperature:  300°C to 350°C
Notes:                                  Some hydrophillicity
Low artefacts (<0.1 ng)
Inert – suitable for labile compounds
Excellent batch-to-batch reproducibility
Non-friable
Easily contaminated by higher
boiling components - protect with
front bed of weaker sorbent
12. Carbosieve SIII™ (60 - 80 mesh only)
Sorbent Strength:                            Very Strong
Specific Surface Area (m2/g):                  ~800 - but primarily operates on molecular sieve principle
Approximate analyte volatility range:        Ethane to n-C5
Boiling point -60°C to 80°C
Example Analytes:                          Ultra volatile hydrocarbons
Sorbent Maximum Temperature:          >400°C
Recommended Conditioning Temperature: 350°C to 400°C
Recommended Desorption Temperature:  300°C to 350°C
Notes:                                  Some hydrophillicity
Low artefacts (<0.1 ng)
Easily and irreversibly contaminated
by higher boiling components -
protect with front bed of weaker
sorbent
13. Carboxen 1000™ (range of mesh sizes)
Sorbent Strength:                            Very Strong for small molecules
Specific Surface Area (m2/g):                >1200 – also operates on molecular
sieve principle
Approximate analyte volatility range:        permanent gases and light
hydrocarbons (C2, C3)
Boiling point -60°C to 80°C
Example Analytes:                          Ultra volatile hydrocarbons
Sorbent Maximum Temperature:          >400°C
Recommended Conditioning Temperature: 350°C to 400°C
Recommended Desorption Temperature:  300°C to 350°C
Notes:                                  Significantly hydrophilic - do not use
in humid conditions.
High artefacts (>10 ng),
Easily & irreversibly contaminated
by higher boiling components
14. Molecular Sieve 5Å
Sorbent Strength:                          Very Strong for small molecules
Approximate analyte volatility range:        Boiling point -60°C to 80°C
Example Analytes:                          nitrous oxide
Sorbent Maximum Temperature:          350°C to 400°C
Recommended Conditioning Temperature: 300°C - 350°C max (increase
temperature gradually from 100°C)
Recommended Desorption Temperature:  To suit analyte
Notes:                                  Significantly hydrophilic - do not use
in humid conditions.
High artefacts (>10 ng)
Easily & irreversibly contaminated
by higher boiling components
15. Molecular Sieve 13X
Sorbent Strength:                          Very Strong for small molecules
Approximate analyte volatility range:        Boiling point -60°C to 80°C
Example Analytes:                        1, 3-butadiene
Sorbent Maximum Temperature:          350°C to 400°C
Recommended Conditioning Temperature: 300°C - 350°C max (increase
temperature gradually from 100°C)
Recommended Desorption Temperature:  To suit analyte
Notes:                                  Significantly hydrophilic - do not use
in humid conditions.
High artefacts (>10 ng)
Easily & irreversibly contaminated
by higher boiling components