Automated Analysis of Trace Metals by Flame Atomic Absorption Spectrometry

Lahiri, Sharbari; Yuan, Bill.; Stillman, Martin J.

doi:10.1021/ac00090a025

Cited by 9 publications

(9 citation statements)

References 18 publications

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“…32-34-43 AAcontrol is a prototype concerned with the automation of the flame AAS analysis process. 44 We have found that knowledge acquisition is most effective when it is focused on particular cases rather than on the entire target domain. Such cases involve relatively narrow, more specific, and, therefore, less complex problem subdomains.…”

Section: Computing Environmentmentioning

confidence: 86%

Design of an Expert System for Emergency Response to a Chemical Spill. 1. Domain Definition and Knowledge Acquisition

Zhu¹,

Stillman²

1995

J. Chem. Inf. Comput. Sci.

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This paper describes the knowledge acquisition stage in the development of an expert system designed to assist in planning the most appropriate response to chemical spills. A knowledge orientation analysis has been applied to the problem domain and a conceptual decision-making hierarchy has been constructed.Five primitive phases of action have been identified from this conceptual model, and these phases are followed in the subsequent development of the prototype. The knowledge base that was developed in this work consists of a database of factual information and a rulebase of heuristic knowledge. Using a subject-oriented structure, the database of information can effectively handle the large amount of literature information necessary to be considered in planning the response to a spill. The heuristic knowledge is represented as a set of production rules that help in the interpretation of the factual information. The knowledge acquisition process is referred to as a bottleneck in the development of expert system applications. For this prototype the knowledge acquisition step is carried out using an innovative knowledge encoding scheme, known as the knowledge domain matrix (KDM). A fully functional knowledge base has been developed.+ Keyword: knowledge acquisition, chemical spill, environmental emergency, knowledge base, production rules, inference engine, knowledge domain matrix, ERexpert.

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Section: Computing Environmentmentioning

confidence: 86%

Design of an Expert System for Emergency Response to a Chemical Spill. 1. Domain Definition and Knowledge Acquisition

Zhu¹,

Stillman²

1995

J. Chem. Inf. Comput. Sci.

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“…A calibration graph was obtained in under 1 min, and it was also shown how a standard additions method of calibration could be performed. Instrument control and data analysis software was described (265) for routine analysis by FAAS. Included was an expert system for detection of errors during unattended operation.…”

Section: Flame Atomic Absorption and Emissionmentioning

confidence: 99%

Atomic Absorption, Atomic Emission, and Flame Emission Spectrometry

Jackson

Chen

1996

Anal. Chem.

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“…99,156,157 The AAexpert program has been designed to implement totally automated analysis by flame AAS. 100 PAWMI is a program developed to carry out automated identification of bulk organic waste mixtures using IR data as a preliminary screening tool prior to quantitative analysis. 102 A number of instrumental diagnostic expert systems have been developed.…”

Section: Expert System Applications In the Chemistry Domainmentioning

confidence: 99%

“…For nearly 20 years, our laboratory has been involved in the application of computer technology in instrumental analysis. 100,[109][110][111]119,126,136,[141][142][143][144][145][146][147][148][149] The early work, programs such as CDSCAN, SpectraManager, and Simpfit, were computer programs developed specifically for instrument control and manipulation of spectral data using the concept of spreadsheets. [142][143][144][145] These programs dealt with problems that are more procedurally and numerically oriented and common in experimental spectroscopic research.…”

Section: Applications In Analytical Chemistrysthe Acexpert Projectmentioning

confidence: 99%

“…110,111,119 AAcontrol automatically controls an AAS analysis process. 100,109,110,145 ERexpert and ACmethod advance our applications by combining expert system technology with database systems to solve specific chemical problems. 126,136 Presently, we are focusing on tasks related to analytical data analysis, data quality evaluation, and trend prediction.…”

Section: Development Of a Windows Based Expert Systemmentioning

confidence: 99%

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Expert Systems and Analytical Chemistry: Recent Progress in the ACexpert Project

Zhu

Stillman

1996

J. Chem. Inf. Comput. Sci.

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In this paper we discuss the application of expert system technology in the analytical chemistry domain and summarizes the progress made in the implementation of the ACexpert project. We start with a brief description of the software tools that are commonly used in construction of expert system applications as well as the inference mechanisms employed to search the knowledge base. A brief review of the achievements made world wide during the past five years in the development of expert systems for use in the chemistry domain follows. This paper particularly addresses the difficulties found in the knowledge acquisition process. An effective knowledge encoding scheme, named the knowledge domain matrix process (KDM), that has been developed in our laboratory as an knowledge encoding alternative, is described. In the final section, we describe the development of several stand-alone expert system modules based on implementation of the KDM scheme within the framework of the ACexpert project. The importance of the user interface in an expert system program is also emphasized, and graphical user interfaces featuring icons, pull-down menus, and graphical descriptions have been developed for the different modules in the ACexpert project to ensure a user-friendly and self-explanatory environment.

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Automated Analysis of Trace Metals by Flame Atomic Absorption Spectrometry

Cited by 9 publications

References 18 publications

Design of an Expert System for Emergency Response to a Chemical Spill. 1. Domain Definition and Knowledge Acquisition

Design of an Expert System for Emergency Response to a Chemical Spill. 1. Domain Definition and Knowledge Acquisition

Atomic Absorption, Atomic Emission, and Flame Emission Spectrometry

Expert Systems and Analytical Chemistry: Recent Progress in the ACexpert Project

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