Instrumental Blank Samples Assessed Through Short Run Control Charts

Andreia Matos, Andreia Rego, Isabel Castanheira, Ana Sofia Matos

Abstract

This paper presents a study where Statistical Process Control (SPC) are used as an internal quality control tool to monitor and assess the stability of instrumental blank samples for inorganic arsenic determination by inductively coupled plasma mass spectroscopy (ICP-MS). The use of Short Run control charts combined with process capability analysis revealed to be a suitable tool allowing to detect possible reagent or instrumental contaminations in a daily base.

Keywords

internal quality control, instrumental blank samples, ICP-MS, Short Run control chart, process capability

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IMEKO TC

TC23 - Metrology in Food and Nutrition

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