SAQA All qualifications and part qualifications registered on the National Qualifications Framework are public property. Thus the only payment that can be made for them is for service and reproduction. It is illegal to sell this material for profit. If the material is reproduced or quoted, the South African Qualifications Authority (SAQA) should be acknowledged as the source.
SOUTH AFRICAN QUALIFICATIONS AUTHORITY 
REGISTERED UNIT STANDARD: 

Quantify analyte concentrations in prepared samples by means of hydride generation atomic absorption spectroscopy 
SAQA US ID UNIT STANDARD TITLE
246439  Quantify analyte concentrations in prepared samples by means of hydride generation atomic absorption spectroscopy 
ORIGINATOR
Chemical Industries SGB 
PRIMARY OR DELEGATED QUALITY ASSURANCE FUNCTIONARY
-  
FIELD SUBFIELD
Field 06 - Manufacturing, Engineering and Technology Manufacturing and Assembly 
ABET BAND UNIT STANDARD TYPE PRE-2009 NQF LEVEL NQF LEVEL CREDITS
Undefined  Regular  Level 4  NQF Level 04  11 
REGISTRATION STATUS REGISTRATION START DATE REGISTRATION END DATE SAQA DECISION NUMBER
Reregistered  2018-07-01  2023-06-30  SAQA 06120/18 
LAST DATE FOR ENROLMENT LAST DATE FOR ACHIEVEMENT
2024-06-30   2027-06-30  

In all of the tables in this document, both the pre-2009 NQF Level and the NQF Level is shown. In the text (purpose statements, qualification rules, etc), any references to NQF Levels are to the pre-2009 levels unless specifically stated otherwise.  

This unit standard does not replace any other unit standard and is not replaced by any other unit standard. 

PURPOSE OF THE UNIT STANDARD 
This unit standard is for persons responsible for analysing samples by means of hydride generation atomic absorption spectroscopy.

A person credited with this unit standard is able to:
  • Demonstrate knowledge relating to hydride generation atomic absorption spectroscopy.
  • Prepare to quantify analyte concentration in prepared samples.
  • Analyse samples by means of hydride generation atomic Absorption spectroscopy.

    This unit standard will contribute to the full development of the learner by providing recognition, further mobility and transportability within the sub-fields of manufacturing and assembly, physical sciences, life sciences, environmental sciences, earth and space sciences. The skills, knowledge and understanding demonstrated within this unit standard are essential for social and economic transformation and upliftment. 

  • LEARNING ASSUMED TO BE IN PLACE AND RECOGNITION OF PRIOR LEARNING 
    Description of required skills:
  • Literacy, mathematical literacy and natural science, at NQF Level 3.
  • Computer Literacy.
  • Unit Standard: Determine the mass of a substance.
  • Unit Standard: Perform measurements using volumetric glassware.
  • Quantify analyte concentrations in prepared samples by means of flame atomic absorption spectroscopy.
  • Laboratory health, safety, and environmental standards. 

  • UNIT STANDARD RANGE 
    This unit standard applies to any application of hydride generation atomic absorption spectroscopy.

    The preparation of samples is not included in this standard. Any laboratory environment applies.

    The level assigned to this unit standard is appropriate because the process requires a wide range of technical skills and offers a considerable choice of procedures. A broad knowledge base incorporating some theoretical concepts, analytical interpretation of information, informed judgement and a range of sometime innovative responses to concrete but often unfamiliar problems are employed. The application of this unit standard is to qualify the person for certification in advanced trade and technical occupations. 

    Specific Outcomes and Assessment Criteria: 

    SPECIFIC OUTCOME 1 
    Demonstrate understanding of Hydride Generation Atomic Absorption Spectroscopy. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    Hazards and risks pertaining to the hydride generation atomic absorption spectroscopy determination are identified and explained with reference to team health and safety and environmental impact. 
    ASSESSMENT CRITERION RANGE 
    Hazards and risks include but are not limited to:
  • Incorrect selection and use of gases required.
  • Flashback occurrence.
  • Hazards of chemicals and fumes.
  • Waste disposal.
     

  • ASSESSMENT CRITERION 2 
    The appropriate preventive measures are described to ensure safe working practices. 

    ASSESSMENT CRITERION 3 
    The advantages of the hydride generation process are explained in terms of sensitivity and interferences. 

    ASSESSMENT CRITERION 4 
    The basic principles of the hydride generation technique are explained in terms of generation, collection/transport and atomization. 

    ASSESSMENT CRITERION 5 
    The principal components of the hydride generator are correctly identified and their primary functions are briefly described. 
    ASSESSMENT CRITERION RANGE 
    Principal components include but are not limited to:
  • Gas/liquid separator.
  • Collection flask.
  • Atom cell.
  • Pump tubing.
     

  • ASSESSMENT CRITERION 6 
    The impacts of wavelength, analyte concentration, flow-rate and type of atomizer are explained with reference to obtaining optimal absorbance. 

    ASSESSMENT CRITERION 7 
    The factors that determine optimum hydride release are listed in accordance with specified requirements. 

    SPECIFIC OUTCOME 2 
    Prepare to quantify analyte concentration in prepared samples. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    The required health, safety and personal protective equipment is available, operational, fit for purpose and used in accordance with workplace procedures. 

    ASSESSMENT CRITERION 2 
    The calibration standards are prepared and are appropriate with respect to sample matrix and concentration range for the particular sample. 

    ASSESSMENT CRITERION 3 
    The equipment is assembled, optimised and calibrated in accordance with workplace instructions and procedures. 

    ASSESSMENT CRITERION 4 
    The prepared samples are identified and verified in accordance with workplace procedures. 

    SPECIFIC OUTCOME 3 
    Analyse samples by means of Hydride Generation Atomic Absorption Spectroscopy. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    The analyte concentration is measured in accordance with workplace instructions and quality control procedures. 

    ASSESSMENT CRITERION 2 
    The work is conducted in a manner that ensures continuity, and supports a smooth flow throughout the process. 

    ASSESSMENT CRITERION 3 
    Data is recorded, processed and reported in accordance with workplace procedures. 

    ASSESSMENT CRITERION 4 
    The effect of non-compliance is explained in terms of turnaround time for analytical results. 

    ASSESSMENT CRITERION 5 
    Common problems and their effect on the process are explained in accordance with specified requirements. 
    ASSESSMENT CRITERION RANGE 
    Common problems must include:
  • Nebulizer and burner blockages.
  • Incorrect gas ratios and flow-rate.
  • Excessive curvature.
  • Signal instability.
  • Analyte concentration falls outside calibration range.
  • Flickering lamp.
  • Excessive lamp current.
  • Contamination.
  • Insufficient lamp warm-up time.
     

  • ASSESSMENT CRITERION 6 
    Appropriate preventive or corrective actions are briefly described in accordance with workplace instructions. 

    ASSESSMENT CRITERION 7 
    Health, safety and environmental standards are adhered to during laboratory activities. 
    ASSESSMENT CRITERION RANGE 
    Health, safety and environmental issues include:
  • Housekeeping.
  • Waste disposal.
  • Storage.
     

  • SPECIFIC OUTCOME 4 
    Report results of the Hydride Generation Atomic Absorption Spectroscopy. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    Sample details are recorded in accordance with workplace procedures. 

    ASSESSMENT CRITERION 2 
    Equipment conditions are checked and recorded in accordance with workplace procedures. 

    ASSESSMENT CRITERION 3 
    Reagent and analyte concentrations and other relevant information are recorded in accordance with workplace procedures. 

    ASSESSMENT CRITERION 4 
    Data is processed and required calculations are reported in accordance with workplace procedures. 

    ASSESSMENT CRITERION 5 
    Problems encountered and corrective actions taken are reported in accordance with workplace procedures. 

    ASSESSMENT CRITERION 6 
    Final results and validity of these results are reported in accordance with workplace procedures. 


    UNIT STANDARD ACCREDITATION AND MODERATION OPTIONS 
  • Internal moderation.
  • External moderation.
  • An assessor, accredited by the relevant ETQA, will assess the learner's competency.
  • Assessment procedures will be supplied by the ETQA in alignment with NSB requirements.
  • All assessment activities must be fair, so that all candidates have equal opportunities. Activities must be free of gender, ethnic or other bias.
  • Assessment and moderation procedures, activities and tools must be transparent, affordable and support development within the field, sub-field and NQF.
  • Questions and answers to determine theoretical knowledge are expected.
  • Examination of an assessment portfolio.
  • Reporting skills are demonstrated by effective communication, using verbal (language) and/or writing skills.
  • Direct observation in simulated or actual work conditions.
  • Practical demonstration of the mentioned techniques. 

  • UNIT STANDARD ESSENTIAL EMBEDDED KNOWLEDGE 
    The following items reflect the type of knowledge that the assessor will evaluate:

    Construction of an atomic absorption spectroscope:
  • Major components and functions.
  • Systems.
  • Consumables.
  • Instrumentation.

    Applications and operation of an atomic absorption spectroscope:
  • Ranges of use and applications.
  • Principles of operation.
  • Advantages, disadvantages and accuracy of results.
  • Production efficiencies and capacities.
  • Basic maintenance and adjustments.
  • Defects.

    Occupational Safety, Health and Environment:
  • Hazards and risks encountered.
  • Safety systems and health protection.
  • Personal Protective Equipment requirements
  • Environmental protection and pollution controls.
  • Emergency procedures.

    Applicable statutory requirements for operation for an atomic absorption spectroscope:
  • Applicable Acts and Regulations.
  • Codes of Practice.

    Quality Assurance for operation of an atomic absorption spectroscope:
  • Calibration of equipment.
  • Standards of requirements.
  • Sample identification and tracking.

    Communication:
  • Reporting requirements.
  • Liaison with customers.
  • Use of IT systems. 

  • UNIT STANDARD DEVELOPMENTAL OUTCOME 
    N/A 

    UNIT STANDARD LINKAGES 
    N/A 


    Critical Cross-field Outcomes (CCFO): 

    UNIT STANDARD CCFO IDENTIFYING 
    Identify and solve problems in which response displays that responsible decisions, using critical and creative thinking, have been made by:
  • Explaining hazards, risks and common problems and the suitable preventive actions.
  • Explaining the effect of non-compliance in terms of turnaround time for analytical results.

    Refer to the following Specific Outcome(s):
  • Demonstrate understanding of Hydride Generation Atomic Absorption Spectroscopy.
  • Analyse samples by means of Hydride Generation Atomic Absorption Spectroscopy. 

  • UNIT STANDARD CCFO WORKING 
    Work effectively with others as a member of a team, group, organisation or community by:
  • Identifying and explaining hazards and risks pertaining to the hydride generation atomic absorption spectroscopy determination with reference to team health and safety and environmental impact.
  • Recording, processing and reporting data.

    Refer to the following Specific Outcome(s):
  • Demonstrate understanding of Hydride Generation Atomic Absorption Spectroscopy.
  • Analyse samples by means of Hydride Generation Atomic Absorption Spectroscopy. 

  • UNIT STANDARD CCFO ORGANISING 
    Organise and manage oneself and one's activities responsibly and effectively by:
  • Preparing to quantify analyte concentration in prepared samples according to procedures.
  • Prioritising and integrating the various activities in order to meet the set targets.
  • Adhering to health, safety and environmental standards during laboratory activities.
  • Recording, processing and reporting test results.

    Refer to the following Specific Outcome(s):
  • Prepare to quantify analyte concentration in prepared samples.
  • Analyse samples by means of Hydride Generation Atomic Absorption Spectroscopy.
  • Report results of the Hydride Generation Atomic Absorption Spectroscopy. 

  • UNIT STANDARD CCFO COLLECTING 
    Collect, analyse, organise and critically evaluate information by:
  • Understanding the application of Hydride Generation Atomic Absorption Spectroscopy.
  • Explaining common problems and the suitable preventive actions.
  • Preparing the calibration standards appropriate for the sample matrix and concentration range for the particular sample.

    Refer to the following Specific Outcome(s):
  • Demonstrate understanding of Hydride Generation Atomic Absorption Spectroscopy.
  • Prepare to quantify analyte concentration in prepared samples.
  • Analyse samples by means of Hydride Generation Atomic Absorption Spectroscopy. 

  • UNIT STANDARD CCFO COMMUNICATING 
    Communicate effectively by using mathematical and/or language skills in the modes of oral and/or written presentations by:
  • Performing required calculations.
  • Recording, processing and reporting data.

    Refer to all Specific Outcomes. 

  • UNIT STANDARD CCFO SCIENCE 
    Use science and technology effectively and critically, showing responsibility towards the environment and health of others by:
  • Using advanced instruments and equipment in accordance with workplace instructions and procedures.

    Refer to the following Specific Outcome(s):
  • Prepare to quantify analyte concentration in prepared samples.
  • Analyse samples by means of Hydride Generation Atomic Absorption Spectroscopy. 

  • UNIT STANDARD CCFO DEMONSTRATING 
    Demonstrate an understanding of the world as a set of related systems by recognising that problem-solving contexts do not exist in isolation by:
  • Understanding the purpose and use of Hydride Generation Atomic Absorption Spectroscopy.
  • Adhering to health, safety and environmental protection standards during laboratory activities.

    Refer to all Specific Outcomes. 

  • UNIT STANDARD CCFO CONTRIBUTING 
    Contribute to the full personal development of each learner and the social and economic development of the society at large by:
  • Understanding the role of Hydride Generation Atomic Absorption Spectroscopy in the laboratory analysis environment and the effect it has on the growth and development of the organisation, its customers and employees.

    Refer to all Specific Outcomes. 

  • UNIT STANDARD ASSESSOR CRITERIA 
    N/A 

    REREGISTRATION HISTORY 
    As per the SAQA Board decision/s at that time, this unit standard was Reregistered in 2012; 2015. 

    UNIT STANDARD NOTES 
    Supplementary Information:

    Terms and definitions:

    Specified requirements include legal and site specific requirements and are contained in one or more of the following documents:

    Legal:
  • Relevant Acts: e.g. Mine Health & Safety Act, 1996 (Act no 29/1996), and Minerals Act and Regulations, 1991 (Act no 50/1991).
  • Regulations.
  • Mandatory Codes of Practice.
  • SABS and other Standards.
  • Chief Inspector of Mines' Directives.

    Site Specific:
  • Hazard Identification and Risk Assessments (HIRA).
  • Occupational Health and Safety Risk Management Programme.
  • Voluntary Codes of Practice.
  • Managerial Instructions.
  • Mine Standard Procedures.
  • List of Recorded OH&S Risks.
  • Working Guides.
  • Equipment and Materials Specifications. 

  • QUALIFICATIONS UTILISING THIS UNIT STANDARD: 
      ID QUALIFICATION TITLE PRE-2009 NQF LEVEL NQF LEVEL STATUS END DATE PRIMARY OR DELEGATED QA FUNCTIONARY
    Elective  58952   Further Education and Training Certificate: Laboratory Analysis  Level 4  NQF Level 04  Passed the End Date -
    Status was "Registered" 
    2008-08-05  As per Learning Programmes recorded against this Qual 
    Elective  64950   Further Education and Training Certificate: Laboratory Analysis  Level 4  NQF Level 04  Reregistered  2021-06-30  As per Learning Programmes recorded against this Qual 


    PROVIDERS CURRENTLY ACCREDITED TO OFFER THIS UNIT STANDARD: 
    This information shows the current accreditations (i.e. those not past their accreditation end dates), and is the most complete record available to SAQA as of today. Some Primary or Delegated Quality Assurance Functionaries have a lag in their recording systems for provider accreditation, in turn leading to a lag in notifying SAQA of all the providers that they have accredited to offer qualifications and unit standards, as well as any extensions to accreditation end dates. The relevant Primary or Delegated Quality Assurance Functionary should be notified if a record appears to be missing from here.
     
    NONE 



    All qualifications and part qualifications registered on the National Qualifications Framework are public property. Thus the only payment that can be made for them is for service and reproduction. It is illegal to sell this material for profit. If the material is reproduced or quoted, the South African Qualifications Authority (SAQA) should be acknowledged as the source.