8
River and Stream Sediments
Tube Ld. Flow
Sampler IV
Argon
in
mL·min· 1
2 min sample
0.12L·min· 1
1 min wash
1
0.090
4.35
I
LMC
SMC
I 0.090 4.35
I
I
I 0.030 0.48
Sodium borohydride
Coil
I
2.4mm Ld.
0.030
0.48
40 It. long
j
Proportioning
Gas
pump
Separator
I
!
Argon
Liquid to waste
0.22 L· min- 1
To ICAP torch
Dilution water in
Gas and liquid in
'"
6cm
u
4cm
Liquid out
8mmo.d.
30cm
--;:::Fig. 2.1 a, b
Determination of arsenic in river sediments: a manifold; b gas separator (from
[4]).
River and Stream Sediments
Tube Ld. Flow
Sampler IV
Argon
in
mL·min· 1
2 min sample
0.12L·min· 1
1 min wash
1
0.090
4.35
I
LMC
SMC
I 0.090 4.35
I
I
I 0.030 0.48
Sodium borohydride
Coil
I
2.4mm Ld.
0.030
0.48
40 It. long
j
Proportioning
Gas
pump
Separator
I
!
Argon
Liquid to waste
0.22 L· min- 1
To ICAP torch
Dilution water in
Gas and liquid in
'"
6cm
u
4cm
Liquid out
8mmo.d.
30cm
--;:::Fig. 2.1 a, b
Determination of arsenic in river sediments: a manifold; b gas separator (from
[4]).