温度补偿系数实例 (Α-Values); 实际盐度标准 (Unesco 1978) - Mettler Toledo SevenGo pro SG7 Instrucciones De Manejo

8.2 电导校准溶液
t(° C) 84 μS/cm
0 46 μS/cm
10 60 μS/cm
15 68 μS/cm
20 76 μS/cm
25 84 μS/cm
30 93 μS/cm
35 102 μS/cm
8.3 温度补偿系数实例 (α-values)
化学物质 25° C
HCl
KCl
CH COOH
3
NaCl
H SO
2 4
HF
8.4 实际盐度标准 (UNESCO 1978)
SG3 和 SG7 电导率仪测量的盐度使根据UNESCO 1978官方标准计算而得，
因此样品在压力为标准大气压得盐度Spsu是按照以下公式计算的：
a = 0.0080 b
0 0
a = -0.1692 b
1 1
a = 25.3851 b
2 2
a = 14.0941 b
3 3
a = -7.0261 b
4 4
a = 2.7081 b
5 5
(每1000g溶液中含32.4356gKCl)
METTLER TOLEDO SevenGo pro™ conductivity
1413 μS/cm 12.88 mS/cm
776 μS/cm 7.15 mS/cm
1020 μS/cm 9.33 mS/cm
1147 μS/cm 10.48 mS/cm
1278 μS/cm 11.67 mS/cm
1413 μS/cm 12.88 mS/cm
1552 μS/cm 14.12 mS/cm
1696 μS/cm 15.39 mS/cm
浓度 [%]
10
10
10
10
10
1.5
= 0.0005 k = 0.00162
= -0.0056
= -0.0066
= -0.0375
= 0.0636
= -0.0144
温度系数 [%/° C]
α
1.56
1.88
1.69
2.14
1.28
7.20
附录
23