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This list provides the recommended, smallest full-scale range within
which a chromophore can be measured, and at what wavelength (WL)
that occurs.
The wavelengths listed are the most sensitive for the corresponding
chromophore within the limits of instruments.
The lowest detectable level of a chromophore is about 2% of the
recommended full-scale range.
(If greater sensitivity is required, signal gain can be used in some
cases; please consult factory).
These data are based on a reading of 1 Absorbance Unit at full-scale
and a measuring beam pathlength of 50 centimeters.
For measurement of a chromophore at much higher concentration ranges than
the minimum, a shorted pathlength or a less sensitive wavelength
might be selected.
In the table below,
> the (S) denotes a solution, the solvent is a
hydrocarbon unless otherwise noted .
> and an (L) denotes a liquid phase of the chromophore.
|
Chromophore
|
Full-Scale Range
|
WL, nm |
|
Acetaldehyde (S-H20) |
100ppm |
280 |
| Acetic
Acid (S-H2O) |
400ppm |
228 |
| Acetic
Acid (S-H2SO4) |
160ppm
|
228 |
| Acetic
Anhydride (L) |
120ppm |
254 |
|
Acetone (S-H2O) |
70ppm |
265 |
|
Acetone (S-Alcohol) |
100ppm |
280 |
|
Acrolein (S) |
7ppm |
228 |
|
Aniline (S-H20) |
700ppb |
228 |
|
Aniline (L) |
230ppb |
228 |
|
Anisole (S) |
2ppm |
265 |
|
Anthracene (L) |
60ppb |
254 |
|
Anthraquinone (L) |
250ppb |
228 |
|
Benzaldehyde (S) |
300ppb |
228 |
|
Benzaldehyde (L) |
350ppb |
254 |
|
Benzene (S) |
10ppm |
254 |
|
Benzene (L) |
15ppm |
254 |
|
Benzoic Acid (S-C2H5OH) |
250ppb |
228 |
|
Benzonitrile (S-CH3OH) |
1ppm |
228 |
|
Benzonitrile (L) |
2ppm |
228 |
|
Bisphenol-A (S-NaOH) |
100ppb |
254 |
|
Bromobenzene (S) |
2ppm |
228 |
| Butyl
Mercaptan (S-cyclohexane) |
5ppm |
228 |
|
Chlorine Dioxide (S-H2O) |
2ppm |
365 |
| Chloro(mono)benzene(S) |
10ppm |
265 |
|
Chloroform (S) |
800ppm |
228 |
|
o-Chlorophenol (S) |
15ppm |
265 |
|
m-Chlorophenol (S) |
20ppm |
265 |
|
p-Chlorophenol (S) |
15ppm |
289 |
|
Chloroprene (L) |
100ppb |
228 |
| Cr+3
(S-H2O) |
100ppm |
610 |
|
Cr+6(S-H3O+) |
3ppb |
345 |
| Cu++(S-H2O)
|
1ppm |
546 |
|
o-, m-, p Cresol (S) |
2ppm |
280 |
|
Croton-Aldehyde (S) |
5ppm |
228 |
|
Cyclohexanone (S) |
150ppm |
280 |
|
Diacetyl (S-alcohol) |
100ppm |
289 |
|
o-Dibutylphthalate (S) |
2ppm |
228 |
|
Diethyl Sulfide (S) |
2ppm |
228 |
|
Dimethyldisulfide (S) |
7ppm |
254 |
|
Dimethylterephthalate (S-glycol) |
40ppm |
254 |
|
Diphenyl (S) |
100ppb |
254 |
|
Diphenylether (S-C2H5OH) |
300ppb |
228 |
| Ethyl Acetate
(S-H2O) |
200ppm |
228 |
| Ethylbenzene
(S) |
15ppm |
254 |
| Ethylenechlorohydrin
(S-H2O) |
1000ppm |
228 |
| Ethyl Mercaptan
(S) |
10ppm |
228 |
| Ferric Chloride
(S-H2O) |
30ppm |
405 |
| Ferrous Chloride
(S-H2O) |
8000ppm |
760 |
| Ferrous Sulfate
(S-H2O) |
8000ppm |
760 |
| Formic
Acid (S-H2O) |
15% |
254 |
| Furan
(S) |
150ppm |
228 |
| Furfural
(S) |
130ppb |
254 |
| Furfural
(S-H2O) |
180ppb |
254 |
| Hydrazine
(S-H2O) |
170ppm |
254 |
| Hydrogen Peroxide
(S-H2O) |
3ppm |
254 |
| Hydrogen Peroxide (S-NaOH) |
3ppm |
254 |
| Hypochlorous
Acid (S-H2O) |
5ppm |
313 |
| Hypochlorous Acid (S-NaOH) |
5ppm |
313 |
| Iodine (S-alcohol) |
20ppm |
365 |
| Idoform (S-alcohol) |
5ppm |
228 |
| Ketene
(S) |
70ppm |
313 |
| Lithium Bromide
(S-H2O) |
330ppm |
228 |
| Lithium Iodide
(S-H2O) |
180ppm |
228 |
| Maleic Anhydride
(S-CCl4) |
100ppm |
265 |
| Maleic Anhydride
(S-CH3OH) |
1ppm |
228 |
| Manganous Sulfate
(S-H2O) |
5% |
402 |
| Methyl Ethyl Ketone
(S) |
90ppm |
280 |
| Mehtyl Ethyl Ketone
(S-H2O) |
70ppm |
265 |
| Nitric
Acid (S-H2O) |
300ppm |
313 |
| Nitro Analine
(S-H2O) |
1ppm |
280 |
| p-Nitro Analine
(S-C2H5OH) |
200ppb |
365 |
| Nitro
Benzene (S) |
300ppb |
254 |
|
o-Nitro Toluene (S) |
600ppb |
259 |
|
m-Nitro Toluene (S) |
400ppb |
254 |
|
p-Nitro Toluene (S) |
350ppb |
265 |
| Oxalic
Acid (S) |
60ppm |
280 |
| Phenol
(S) |
5ppm |
265 |
| Phenol
(S-H2O) |
4ppm |
265 |
| Phenol (S-NaOH) |
3ppm |
228 |
| Styrene
(S) |
460ppb |
254 |
| Sulfur (S-alcohol) |
300ppb |
265 |
| Sulfur Monochloride
(S) |
2ppm |
265 |
| Sulfar Oxychloride
(S) |
350ppb |
228 |
| Tetrachloroethylene
(S) |
900ppb |
228 |
|
Toluene (S) |
10ppm |
254 |
| Triethylamine
(S) |
2ppm |
228 |
| Trichlorobenzene
(S) |
10ppm |
228 |
| Trichloroethylene
(S) |
4% |
228 |
| Uranyl Nitrate
(S-HNO3) |
3300ppm |
365 |
| Vanadium
(S) |
4ppm |
405 |
| o-Xylene
(S) |
15ppm |
265 |
| m-Xylene
(S or L) |
15ppm |
265 |
| p-Xylene(S
or L) |
5ppm |
265 |
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Articoli in Italiano 
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