NZQA registered unit standard
8453 version 5
Page 1 of 3
Title
Perform qualitative anion and cation analysis
Level
4
Credits
3
Purpose
People credited with this unit standard are able to identify and
confirm the presence of anions and cations in unknown
samples using wet chemical techniques.
Classification
Science > Chemistry
Available grade
Achieved
Explanatory notes
1
All work must be carried out in accordance with the quality management system,
documented protocol system or Standard Operating Procedures typically acceptable
in a commercial or research laboratory.
2
Health and Safety practices must conform to Australian/New Zealand Standard
AS/NZS 2243:2006 Set – Safety in Laboratories Parts 1, 2, 3, 7, and 10 available at
http://www.standards.co.nz and http://infostore.saiglobal.com/store.
3
Legislation applicable to this unit standard includes:
Health and Safety in Employment Act 1992;
Hazardous Substances and New Organisms Act 1996.
4
Knowledge underpinning the competencies in this unit standard includes but is not
limited to equilibrium constants.
Outcomes and evidence requirements
Outcome 1
Identify and confirm the presence of anions in unknown samples using wet chemical
techniques.
Range
four anions from – Cl-, Br-, I-, NO2-, NO3-, CO32-, SO32-, SO42-, PO43-, S2-, OH-.
Evidence requirements
1.1
Anions are identified and their presence confirmed in the given sample in
accordance with wet chemical techniques used.
1.2
Balanced equations are written consistent with results obtained.
NZQA National Qualifications Services
SSB Code 130301
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
8453 version 5
Page 2 of 3
Outcome 2
Identify and confirm the presence of cations in unknown samples using wet chemical
techniques.
Range
two cations from – Ag+, Pb2+, Cu2+, Cd2+, Hg2+, Al3+, Cr3+, Fe3+, Ni2+, Co2+, Mn2+,
Zn2+.
Evidence requirements
2.1
Cations are identified and their presence confirmed in the given sample in
accordance with wet chemical techniques used.
2.2
Balanced equations are written consistent with results obtained.
Planned review date
31 December 2017
Status information and last date for assessment for superseded versions
Process
Version Date
Last Date for Assessment
Registration
1
24 September 1996
31 December 2014
Revision
2
19 February 1998
31 December 2014
Review
3
23 November 1999
31 December 2014
Review
4
18 June 2010
N/A
Rollover
5
27 January 2015
N/A
Consent and Moderation Requirements (CMR) reference
0152
This CMR can be accessed at http://www.nzqa.govt.nz/framework/search/index.do.
Please note
Providers must be granted consent to assess against standards (accredited) by NZQA,
before they can report credits from assessment against unit standards or deliver courses
of study leading to that assessment.
Industry Training Organisations must be granted consent to assess against standards by
NZQA before they can register credits from assessment against unit standards.
Providers and Industry Training Organisations, which have been granted consent and
which are assessing against unit standards must engage with the moderation system that
applies to those standards.
Requirements for consent to assess and an outline of the moderation system that applies
to this standard are outlined in the Consent and Moderation Requirements (CMR). The
CMR also includes useful information about special requirements for organisations wishing
to develop education and training programmes, such as minimum qualifications for tutors
and assessors, and special resource requirements.
NZQA National Qualifications Services
SSB Code 130301
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
8453 version 5
Page 3 of 3
Comments on this unit standard
Please contact NZQA National Qualifications Services nqs@nzqa.govt.nz if you wish to
suggest changes to the content of this unit standard.
NZQA National Qualifications Services
SSB Code 130301
 New Zealand Qualifications Authority 2016