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Thallium, strontium, lithium, caesium, vanadium, yttrium, tungsten, lanthanum, cobalt, nickel, cadmium, molybdenum, beryllium, bismuth arsenic, and lead were not detected in any of these samples. Blank spaces under B and Zn indicate that the sample in question was not analyzed for these elements,
+ indicates that the element in question was detected spectrographically in the sample. − indicates that the element was not detected spectrographically in the sample.
Table III
Removal of various elements from potassium chloride by distillation.
Table IV
Removal of heavy metals from potassium nitrate solution by basic magnesium carbonate treatment.
Elements removed by one treatment
Elements reduced in concentration by repeated treatment
Elements not effectively removed
Al
Ag
B
Co
Cu
Mo
Cr
Zn
Mn
Ni
Concentration of potassium nitrate: 100 g/l.
Pb
Concentration of each heavy metal: 0.0001 g/l.
Sn
Basic magnesium carbonate: 0.5 g/l.
Ti
V
Tables (4)
Table I
Elements included in the study, and wave-lengths employed for analyses.
Ag
3280.67
3382.89
Al
3944.03
3961.54
As
2860.46
B
2496.78
2497.73
Ba
4554.04
Be
3130.42
3131.06
Bi
3067.73
Ca
3933.67
3968.48
4226.73
Cd
3261.05
Co
3453.51
Cr
4254.34
4274.80
Cs
4555.26
Cu
3247.55
3273.96
Fe
3020.65
3021.08
K
4044.16
4047.22
La
3949.10
Li
4602.99
Mg
2852.13
Mn
4030.76
4033.07
4034.45
Mo
3132.60
3902.96
Ni
3414.77
Pb
2833.07
Sb
2877.92
Si
2881.59
Sn
2839.99
2863.32
3262.33
Sr
4077.71
4607.34
Ti
3370.44
3371.46
3372.80
Tl
5350.47
V
4379.24 to
4408.52
W
4008.76
Y
4900.12
Zn
2138.56
Zr
3496.21
3391.98
Table II
Preparation of purified silica by distillation of silicon tetrachloride.
Thallium, strontium, lithium, caesium, vanadium, yttrium, tungsten, lanthanum, cobalt, nickel, cadmium, molybdenum, beryllium, bismuth arsenic, and lead were not detected in any of these samples. Blank spaces under B and Zn indicate that the sample in question was not analyzed for these elements,
+ indicates that the element in question was detected spectrographically in the sample. − indicates that the element was not detected spectrographically in the sample.
Table III
Removal of various elements from potassium chloride by distillation.
Table IV
Removal of heavy metals from potassium nitrate solution by basic magnesium carbonate treatment.
Elements removed by one treatment
Elements reduced in concentration by repeated treatment