beautypg.com

Metrohm 746 VA Trace Analyzer User Manual

Page 367

background image

5.7 Program instructions

746 VA Trace Analyzer / 747 VA Stand

5-216

Examples

Lead determination using a calibration curve with the

CSOLN/M

instruction (basic structure only):

Method Cal-2 .mth OPERATION SEQUENCE

Title Calibration curve with CSOLN/M

================================================================================

Instructions t/s Main parameters Auxiliary parameters

––––––––––––– ––––– ––––––––––––––––––––––––– –––––––––––––––––––––––––

1 D SMPL/M V.fraction mL V.total L

2 C (CAL

3 C CSOLN/M solution added into MEAS

4 (REP

5 SEGMENT Segm.name DPASV

6 REP)2

7 ØMEAS U.standby mV

8 RINSE Cycles 1 V.rinse mL

9 C CAL)3

10 END

.

.

Method Cal-2 SUBSTANCES

Pb - DPASV

================================================================================

Calibration 1993-11-16 09:42 Coefficients

–––––––––––––––––––––––––––––– –––––––––––––––––––––––––

Technique cal.crv. Y.offset

Curve type 0/linear Slope 0.0006743

Temperature 20.0 °C Nonlin.

Mean dev. 3.043e–10

Range min 2 ug/L # CSoln.name Mass conc.

Range max 30 ug/L –––––––––––––––––––––––––

M.conc./cm 5 ug/L 0 Pb-2.5 2.5 ug/L

1 Pb-5 5 ug/L

V0.CSoln. 10.000 mL 2 Pb-10 10 ug/L

3 Pb-25 25 ug/L

In the program run mode

calibration

, 4 calibration solutions each of

10 mL are measured in succession and used to determine the calibra-
tion curve. After each calibration solution, the prompt

Change measuring

vessel

to change the measuring vessel appears. Lead is then deter-

mined in the program run mode

determination

using the measured

calibration curve.

see also

(CAL, CAL)n, CSOLN/F, CSOLN>M, RINSE,
Calibration curve (section 5.6.3 and section 6.9.5),
Internal standard (section 5.6.3 and section 6.9.6)