ysis II

(1)

Pairs of Analytical Lines Used in the Quantitative Analysis of Gas Mixtures

The table summarizes the basic data obtained by spectral anal- y s i s of gas mixtures. Concentration ranges in many instances can be widened. The listed conditions of mixture excitation were not always optimum. In many instances they were dictated by specific experimental conditions (e.g., the small quantity of available gas).

Practical considerations must therefore be taken into account in working out an analytical procedure (see Section 16). Where no literature source is indicated, the method was developed at the Physics Research Institute of Leningrad State University.

Concentration range, %

Analytical Une pair, Conditions of sample excitation

Standard deviation, %

0 . 1 - 2 0

Analysis of impuritie Determination c Ar II 4806-N Π 4810 Ar II 4806-N Π 4743 ' Ar II 4736-N II 4810

Ar II 4736-N II 4743

s in nitrogen y£ argon

ρ = 0 . 2 mm Hg d = 0 . 4 - 0 . 5 mm

i = 4 0 0 mA f = 6 Mc/s

6

0.1-1 Ar I 7504- Ν I 7469 ρ = 0 . 2 mm Hg d = 0 . 5 mm

i = 4 0 0 mA f = 6 Mc/s 0 . 5 - 2 0 Ar II 4610-N2 4600 High frequency

hoUow catiiode ρ = 6 · 10~2 mm Hg

i = 300 mA Limit of

detection 0.8%

Ar Π 4806 Ring discharge

ρ = 0 . 2 mm Hg d = 30-50 mm

λ =

60 m V = 3000 V C = 0 . 0 1 jiF

265

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Concentration

range, % Analytical^ line pair, Conditions of

sample excitation Standard deviation, % 0.1-98 Ar II 4736-N£ 4709

Ar II 4 7 6 5 - N j 4709

ρ = 0 . 4 - 2 mm Hg Hollow cathode i = 40-100 mA 0 . 9 0 - 1 . 1

[361] Ar I 4 1 5 9 - N2 3998 ρ = 2-10 mm Hg f = 150 Mc/s

0 . 1 - 1 0

Determination of H3 4 8 6 1 - N2 4800

hydrogen

ρ = 0 . 5 mm Hg d = 0 . 5 mm

i = 200 mA f = 6 Mc/s

15

0.04-1

Determination c He 5876-N Π 5667

helium

Pulse discharge ρ = 8 mm Hg d = 12 mm V = 3000 V C = 30 uF

7

0 . 3 - 2 He 5876-N Π 5667 ρ = 0 . 4 mm Hg d = 0 . 3 mm

i = 4 0 0 mA f = 6 Mc/s

10

0.1-1 He 5867-N2 5854 ρ = 0 . 5 mm Hg d = 0 . 5 mm

i = 200 mA f = 6 Mc/s 1.5-12 He 5876-N2 4815 ρ = 1.2 mm Hg

d = 0 . 4 mm i = 400 mA

0 . 1 - 3 0

Determination Ne 6929-N I 7424

of neon

ρ = 0 . 4 mm Hg d = 0 . 3 mm

i = 4 0 0 mA

0 . 5 - 3 0

Determination of cai CO 4 8 3 5 - N2 4815 CO 4835-N II 4601

rbon dioxide ρ = 0 . 3 mm Hg d = 5 mm

i = 350 mA

6 0 . 5 - 3 0

CN 3883-N II 4601 CN 4216-N Π 4601

ρ = 0 . 4 mm Hg d = 5 mm

i = 350 mA

27

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Concentration

range, % Analytical line pair, Â

Conditions of

sample excitation Standard deviation, % 51-95

[425] CO 3127-N 2159 d = 5 mm

ρ = 2 . 5 mm Hg f = 11 Mc/s

1.596

0 . 0 0 1 - 0 . 1

Analysis of impur Determination N2 3998-Ar I 4251

ities in argon of nitrogen

ρ = 10-20 mm Hg d = 10 mm

i = 200 mA

7.5

0 . 1 - 1 0 N2 3998-Ar I 4251 ρ = 0 . 5 - 5 mm Hg d = 5 mm

i = 200 mA

0.05-1

Determination He 5876-Ar II 5145

of helium Pulse discharge ρ = 5 mm Hg d = 10 mm V = 3000 V C = 72 uF 0.1-1 He 5876-Ar I 6416

He 5876-Ar II 5062 ρ = 0 . 9 mm Hg d = 2 mm

0.05-1

D etermination Ο 7772-Ar I 7724

of oxygen ρ = 0 . 5 mm Hg d = 1 mm f = 6 Mc/s

0 . 0 5 - 3

Analysis of impurit D etermination N2 3755-H2 3924 N2 3805-H2 3924

ies in hydrogen of nitrogen

ρ = 1 mm Hg α = 0 . 5 mm

i = 150 mA

4 . 5

0 . 1 - 1

Determination He 4471 - Hy 4340

of helium

ρ = 0 . 5 mm Hg d = 0. 3 mm

i = 350 mA

15

0 . 0 5 - 3

Determination Ο I 7772-H2 7789*

of oxygen ρ = 1 mm Hg d = 0 . 5 mm

i = 150 mA

9

*The mixture was enriched by passing through a palladium capillary.

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0 . 0 4 - 0 . 4

Analysis of impurit Determination ο N2 3020-Ar I 4300*

ies in helium f nitrogen

Positive column of glow discharge ρ = 0.5-8 mm Hg d = 3 mm

i = 25 mA 0.002-0.01 N+ 4600-He2 4626

N£ 4600-He2 4648 N2 3998-He I 3889

ρ = 600 mm Hg α = 1 mm

i = 300 mA f = 6 Mc/s 0.001-0.1 N£ 4278-He I 5047 ρ = 18 mm Hg

d = 1 mm f = 6 Mc/s

0.005-0.1

Determination Ar 4400-He 4388 Ar II 4426-He 4388

of argon

ρ = 200 mm Hg d = 0 . 5 mm

f = 6 Mc/s 1.5-10 Ar I 4259-He 4144

Ar I 4259-He 4121 Ar I 4159-He 4144

ρ = 0.6 mm Hg d = 2 mm

i = 300 mA

6

0 . 5 - 2 [294]

Ar I 4159-He 4471 Glow discharge Signal lamp SN-1

ρ = 30 mm Hg

0.05-2

Determination c H« 6562-He 6678 Hg 4861-He 4922

f hydrogen ρ = 2 mm Hg d = 10 mm

i = 300 mA f = 6 Mc/s

7.5

0.001-0.08

[381] HS 4861-Ar I 4300* Positive column of glow discharge ρ = 0.5-8 mm Hg d - 3 mm

i = 25 mA 0 . 0 0 1 - 0 . 1

[384]

Hg 4861-He 4922 Bß 4861-He 5047

ρ = 18 mm d = 1 mm

f = 6 Mc/s

30

* Argon was introduced as an internal standard.

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Concentration

range, % Analytical line pair, Â

Conditions of

sample excitation Standard deviation, %

0 . 2 - 1 . 2 [381]

Determination Ο I 3964-Ar I 4300*

of oxygen Positive column

of glow discharge ρ = 0 . 5 - 8 mm Hg d = 3 mm

i = 25 mA

0 . 0 0 2 - 0 . 1

Determination <

CH 4312-He 4388

of methane ρ = 10 mm Hg d = 8 mm

i = 25 mA

12

0 . 0 0 2 - 0 . 2

Determinatio]

Ne I 6402-He 6678

ti of neon ρ = 10 mm Hg d = 2-10 mm

i = 300 mA

7.5

0 . 2 - 2 Ne I 6402-He 6678 Ne I 6507-He 6678 Ne I 6383-He 6678

ρ = 6 mm Hg d = 2 mm

i = 300 mA

7.5

2-16 Ne I 5341-He 5048 Ne I 5341-He 5876 Ne I 5401-He 5048 Ne I 5401-He 5876 Ne I 5038-Ne 5401

ρ = 6 mm Hg d = 2 mm

i = 300 mA

6

18-75 Ne I 5401-He 4922 Ne I 5852-He 5876 Ne I 5038-He 4922

ρ = 0.8 mm Hg d = 2 mm

i = 300 mA

4-6

0.01-1 [381]

Determination of ca CO 2296-Ar I 4300*

Lrbon monoxide Positive column

of glow discharge ρ = 0 . 5 - 8 mm Hg d = 3 mm

i = 25 mA

0 . 1 - 1 0

Analysis of impurit Determination <

N2 3998-0 I 3947

ies in oxygen y£ nitrogen

ρ = 0 . 5 mm Hg d = 5 mm

i = 300 mA

4 . 5

* Argon was introduced as an internal standard.

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range, % Â sample excitation deviation, %

0 . 1 - 1 0

Determination Kr I 5871-0 I 5331 Kr I 5871-0 I 6158 Kr I 5570-O I 6158

of krypton ρ = 0.8 mm Hg d = 0 . 5 mm

i = 300 mA

0 . 2 - 1 4

Analysis of impuri Determination c Kr I 5871-Xe I 5875 Kr I 5871-Xe I 5895 Kr I 5871-Xe II 6036 Kr I 5570-Xe II 5419 Kr I 5871-Xe II 5976

ties in xenon )f krypton

ρ = 0. 3 mm Hg d = 0 . 4 mm

i = 300 mA

15

0.3-1

Analysis of impurit Determinatior Ar I 6965-Kr I 6904*

Ar I 7067-Kr I 6904

ies in krypton ι of argon

ρ = 0. 3 mm Hg d = 0 , 5 mm

i = 300 mA

12

1.5-10

Analysis of impur Determinatior Ar I 4510-Ne I 5038 Ar I 4510-Ne I 5080 Ar I 4510-Ar II 4736

ities in neon ι of argon

ρ = 1.3 mm Hg d = 2 mm

i = 350 mA

4 . 5

2-8

[294] Ar I 4191-Ne I 5341 Glow discharge in pilot tube ρ = 30 mm Hg

0 . 1 - 1

Determination He 5876-Ne I 5882

of helium ρ = 0 . 5 mm Hg d = 0 . 5 mm

i = 300 mA 3-15 He 4922-Ne I 5074

He 5016-Ne I 5038 ρ = 0 . 5 mm Hg d = 2 mm

i = 300 mA

* The krypton contained 0.1% xenon.

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Concentration

range, % Analytical line pair,

Ä

Conditions of

sample excitation Standard deviation, %

0 . 5 - 2 5 [425]

Analysis of impurities Determination CN 3883-CO 4124 N2 3998-CO 4124 N2 3998-CO 4392

in carbon dioxide of nitrogen

ρ = 0 . 5 mm Hg d = 5 mm

i = 350 mA

4 . 5

4-40 N2 3159-CO 3242 ρ = 2 . 5 mm Hg 5

2 . 5 - 8 0 [434]

Determination of OH 3064

water vapor

U ltrahigh-frequency discharge in TR and ATR tubes