Metrohm 761 Compact IC User Manual

Page 121

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4.4 Methods

761 Compact IC

111

Broadening

Broadening for peaks in the end of the chroma-

togram compared to peaks in the beginning.

This parameter is used for automatic adjust-

ment of

Width

.

Entry range:

0.1

100

Slope

Threshold for peak recognition.

The value of the first derivation (slope) of the

curve is divided by the baseline noise (which is

estimated using a special algorithm) and the

result is compared with the

Slope

threshold

value. Reasonable range of

Slope

parameter is

0.5...5.

Entry range:

0.1

400

Asymmetry

Ratio of slope threshold at the start of the peak

to slope threshold at the end of the peak. This

parameter is used for automatic adjustment of

Slope

.

Entry range:

0.2

5

Min area

Minimum area of peaks to be detected.

Min height

Minimum height of peaks to be detected.

Rider ratio

Ratio of peak heights for two adjacent peaks. If

this threshold value is exceeded, the smaller

peak is separated from the higher one by tan-

gent skimming. This function is switched off al-

ways if 0 is entered.

Entry range:

0

100

Negative peaks

If this option is enabled, negative peaks are

also detected.

Interpolate baseline start/stop

If this option is enabled, the baseline start and

stop points are interpolated. This setting is rec-

ommended for very sensitive determinations

with high noise

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