常用电极参数 Specifications of Electrodes
|
电极 |
辅助结构 |
技术类型 |
使用量程 |
温度/pH |
干扰 |
|
Ammonia (NH3) 氨 |
CPT4 |
Gas sensing |
5 x 10-7 to 1.0 M (0.01 to 17,000 ppm) |
0 to 50℃/ above 11 |
Volatile amines |
|
Ammonium (NH4+)铵 |
CPT1-4 |
PVC membrane |
5x10-6tol.0M (0.1 to 18,000 ppm) |
0 to 50℃/ 4 to 10 |
K+ |
|
Bromide (Br-)溴离子 |
CPT1-4 |
Solid-state |
5 x 10-6 to 1.0 M (0.4 to 79,900 ppm) |
0 to 80℃/ 2 to 14 |
S-2,I-,
CN-; high levels of Cl-and NH3 |
|
Cadmium (Cd+2)镉离子 |
CPT1-4 |
Solid-state |
10-7 to 10-1
M (0.01 to 11,200 ppm) |
0 to 80℃/ 2 to 12 |
Ag+, Hg+2,
Cu+2; high levels of Pb+2 and Fe+2 |
|
Calcium (Ca+2)钙离子 |
CPT1-4 |
PVC membrane |
5 x 10-6 to 1.0 M (0.2 to 40,000 ppm) |
0 to 50℃/ 3 to 10 |
Pb+2, Hg+2,
Cu+2, Ni+2 |
|
CO2/CO3-2 二氧化碳/碳酸根 |
CPT4 |
Gas sensing |
10-4 to 10-2
M (4.4 to 440 ppm) |
0 to 50℃/ 4.8 to 5.2 |
Volatile weak acids |
|
Chloride (Cl-) 氯离子 |
CPT1-4 |
Solid-state |
5 x 1 0-5 to 1.0
M (1.8 to 35,500 ppm) |
0 to 80℃/ 2 to 12 |
S-2,I-,
CN-, Br-,OH-, NH3, S2O3-2 |
|
Chlorine (Cl2) 氯 |
CPT1-4 |
Solid-state |
5 x 1 0-5 to 1.0
M (1.8 to 35,500 ppm) |
0 to 60℃/ 2 to 12 |
|
|
Chlorine (Cl2) 氯 |
CPT1-4 |
Solid-state |
3 x 1 0-6 to 0.1
M (0.02 to 3,550 ppm) |
0 to 60℃/ 2 to 12 |
|
|
Per-Chlorinate (CIO4-1) 高氯酸根 |
CPT1-4 |
PVC membrane |
5 x 1 0-6 to 10-1
M (0.5 to 99,500 ppm) |
0 to 60℃/ 2 to 12 |
|
|
Copper (Cu+2) 铜离子 |
CPT1-4 |
Solid-state |
10-8 to 10-1
M (0.0006to 6350ppm) |
0 to 80℃/ 2 to 12 |
Ag+, Hg+2,
high levels of Cl-, Br-, Fe+2, Cd+2 |
|
Cyanide (CN-) 氰根 |
CPT1-4 |
Solid-state |
5 x 10-6 to 10-2
M (0.1 to 260 ppm) |
0 to 80℃/ 11 to 13 |
S-2, I-,
Br-, Cl- |
|
Ferrous (Fe+2-) 亚铁离子 |
CPT1-4 |
Solid-state |
7 x 10-6 to 10-2
M (0.4 to 560 ppm) |
0 to 60℃/ 11 to 13 |
|
|
Fluoride (F-) 氟离子 |
CPT1-4 |
Solid-state |
10-6 to saturated (0.02 to saturated) |
0 to 80℃/ 5 to 8 |
OH- |
|
Fluoroborate (BF4-)氟硼酸根 |
CPT1-4 |
PVC membrane |
7 x 10-6 to 1.0 M (0.1 to10,800ppm as B) |
0 to 50℃/ 2.5 to 11 |
ClO4-,
I-, CN- |
|
Hydrogen Sulfide (H2S)硫化氢 |
CPT4 |
Gas sensing |
10-5 to 10-1M (0.3 to 3,300ppm) |
0 to 60℃/ |
|
|
Iodide (I-) 碘离子 |
CPT1-4 |
Solid-state |
5x10-6 to l.0M (0.006 to 127,000 ppm) |
0 to 80℃/ 0 to 14 |
S-2,CN-,Br-,Cl-,NH3,
S2O3-2 |
|
Lead (Pb+2) 铅离子 |
CPT1-4 |
Solid-state |
10-1~5x10-7
M (0.01 to 20,700 ppm) |
0 to 80℃/ 3 to 8 |
Ag+2, Hg+2,
Cu+2, high levels of Cd+2 and Fe+2 |
|
Lithium (Li+) 锂离子 |
CPT1-4 |
PVC membrane |
10-6 tol.0M (0.7 to 6900 ppm) |
0 to 50℃/ 5 to 10 |
Na+, K+,Ca+2
|
|
Mercaptan(SH-) 硫醇根 |
CPT1-4 |
PVC membrane |
0.003 to 3 ppm |
0 to 50℃/ 5 to 10 |
Na+, K+,Ca+2
|
|
Nitrate (N03-) 硝酸根 |
CPT1-4 |
PVC membrane |
7 x 10-6 to 1.0 M (0.5 to 62,000 ppm) |
0 to 50℃/ 2.5 to 11 |
ClO4-,
I-, CN-, BF4- |
|
Nitrite (N02-) 亚硝酸根 |
CPT1-4 |
PVC membrane |
5 x 10-6 to 1.0 M (0.2 to 46,000 ppm) |
0 to 50℃/ 2.5 to 11 |
|
|
Nitrogen oxide (NOx)氮氧化物 |
CPT4 |
Gas sensing |
5x10-6to5xl0-3M (0.2 to 220 ppm) |
0 to 50℃/ 1.1 to 1.7 |
CO2, SO2 HF, acetic acid |
|
Perchlorate (ClO4-)高氯酸根 |
CPT1-4 |
PVC membrane |
7 x 10-6 to 1.0 M (0.7 to 98,000 ppm) |
0 to 50℃/ 2.5 to 11 |
No significant interferences |
|
pH (H+) |
CPT1-4 |
PVC membrane |
10-7 to 10-1
M (1 to 7 pH) |
0 to 50℃/ 1 to 7 |
|
|
Potassium (K+) 钾离子 |
CPT1-4 |
PVC membrane |
10-6 to 1.0 M (0.04 to 39,000 ppm) |
0 to 50℃/ 2 to 12 |
Cs+, NH4+ |
|
Silver/sulfide (Ag+/S-2)银/硫离子 |
CPT1-4 |
Solid-state |
10-7 to l.0
M(Ag+,S-2) (0.01to107,900ppmAg+; 0.003 to 32,100 ppm S-2) |
0 to 80℃/ 2 to 12 |
Hg+2 |
|
Sodium (Na+) 钠离子 |
CPT1-4 |
Glass membrane |
10-6 M to
saturated (0.02 ppm to saturated) |
0 to 80℃/ 5 to 12 |
H+, K+,
Li+, Ag+,Cs+, TI+ |
|
Surfactant (X+/X-)活性剂 |
CPT1-4 |
PVC membrane |
10-5 to 5 x 10-2
M (1.0 to 12,000 ppm) |
0 to 50℃/ 2 to 12 |
Similar types of surfactants |
|
Thiocyanate (SCN-)硫氰酸根 |
CPT1-4 |
Solid-state |
5 x 10-6 to 1.0 M
(0.3 to 58,000 ppm) |
0 to 80℃/ 2 to 10 |
S-2, CN-,
I-, Br-,NH3, S2O3-2 |
☆Optimal pH range for direct
measurement. ★These
ions are listed in order of decreasing concentrations of interference.
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