Food Protection Trends - January/February 2018 - 18

PEER-REVIEWED ARTICLE
Food Protection Trends, Vol 38, No. 1, p. 18-26
Copyright© 2018, International Association for Food Protection
6200 Aurora Ave., Suite 200W, Des Moines, IA 50322-2864

Hazel Farrell,* Phil Baker, Grant Webster,
Edward Jansson, Elizabeth Szabo and
Anthony Zammit
NSW Food Authority, 6 Ave. of the Americas, Newington
NSW 2127, Australia

An Assessment of Potential Heavy Metal Contaminants
in Bivalve Shellfish from Aquaculture Zones along the
Coast of New South Wales, Australia
ABSTRACT
Evaluation of shellfish aquaculture for potential contaminants is essential for consumer confidence and safety.
Every three years, between 1999 and 2014, bivalve
shellfish from aquaculture zones in up to 31 estuaries
across 2,000 km of Australia's east coast were tested
for cadmium, copper, lead, mercury, selenium and zinc.
Inorganic arsenic was included in the analyses in 2002,
and total arsenic was used as a screen for the inorganic
form in subsequent years. Concentrations of inorganic
arsenic, cadmium, lead and mercury were low and did not
exceed maximum limits mandated in the Australia New
Zealand Food Standards Code. As maximum limits have
not been assigned to copper, selenium and zinc, accepted
international dietary guidelines were used as a benchmark. Dietary exposure assessments for these elements
demonstrated that shellfish from the aquaculture areas
investigated do not present a food safety risk. Continued
surveillance is essential, given increasing pressure on
Australia's coastal resources.

INTRODUCTION
Certain elements are essential in human physiology;
however, an incorrect balance or excess of certain elements
in the diet can result in negative health effects. Heavy metals
are of particular concern because of their ability to persist
and accumulate in the environment. While heavy metals
can occur naturally in the environment, human activities
and run-off from urban and agricultural land use may
increase their concentrations (6, 29). This is particularly
important when considering the growing demands on
coastal resources due to increasing populations (3) and the
ability of filter feeding bivalve shellfish to bio-accumulate
contaminants, whose presence in the food chain can pose a
risk to human health.
Previous studies on heavy metal concentrations in
NSW shellfish have focused on individual estuaries (5,
7, 13, 14, 26) or a single time period (17, 21). To ensure
the sustainability of shellfish aquaculture, an ongoing
assessment is required to determine trends in any
potentially hazardous substance and to ensure that the
classification of the shellfish harvest area is appropriate

*Author for correspondence: Phone: +61 (0)2.9741.4882; Fax +61 (0)2.9741.4888; E-mail: hazel.farrell@foodauthority.nsw.gov.au

18

Food Protection Trends January/February


http://www.foodprotection.org/files/food-protection-trends/jan-feb-18-farrell.pdf

Table of Contents for the Digital Edition of Food Protection Trends - January/February 2018

Assessing the Usage of Food Thermometers at American University Football Tailgates
An Assessment of Potential Heavy Metal Contaminants in Bivalve Shellfish from Aquaculture Zones along the Coast of New South Wales, Australia
Mental Models of Pasteurized and Unpasteurized Milk Product Consumption in the United States
Sanitary Carcass Dressing and Food Safety Practices in South Central U.S. Small and Very Small Establishments Manufacturing Fresh and Not-Ready-to-Eat Pork Products
Beyond the Bio - Joe Frank
PDG Highlight The Dairy Safety & Quality Professional Development Group
General Interest Paper The Role of the European Food Safety Authority (EFSA) in the Fight against Antimicrobial Resistance (AMR)
Industry Products
Coming Events
Food Protection Trends - January/February 2018 - Cover1
Food Protection Trends - January/February 2018 - Cover2
Food Protection Trends - January/February 2018 - 1
Food Protection Trends - January/February 2018 - 2
Food Protection Trends - January/February 2018 - 3
Food Protection Trends - January/February 2018 - 4
Food Protection Trends - January/February 2018 - 5
Food Protection Trends - January/February 2018 - 6
Food Protection Trends - January/February 2018 - 7
Food Protection Trends - January/February 2018 - Assessing the Usage of Food Thermometers at American University Football Tailgates
Food Protection Trends - January/February 2018 - 9
Food Protection Trends - January/February 2018 - 10
Food Protection Trends - January/February 2018 - 11
Food Protection Trends - January/February 2018 - 12
Food Protection Trends - January/February 2018 - 13
Food Protection Trends - January/February 2018 - 14
Food Protection Trends - January/February 2018 - 15
Food Protection Trends - January/February 2018 - 16
Food Protection Trends - January/February 2018 - 17
Food Protection Trends - January/February 2018 - An Assessment of Potential Heavy Metal Contaminants in Bivalve Shellfish from Aquaculture Zones along the Coast of New South Wales, Australia
Food Protection Trends - January/February 2018 - 19
Food Protection Trends - January/February 2018 - 20
Food Protection Trends - January/February 2018 - 21
Food Protection Trends - January/February 2018 - 22
Food Protection Trends - January/February 2018 - 23
Food Protection Trends - January/February 2018 - 24
Food Protection Trends - January/February 2018 - 25
Food Protection Trends - January/February 2018 - 26
Food Protection Trends - January/February 2018 - Mental Models of Pasteurized and Unpasteurized Milk Product Consumption in the United States
Food Protection Trends - January/February 2018 - 28
Food Protection Trends - January/February 2018 - 29
Food Protection Trends - January/February 2018 - 30
Food Protection Trends - January/February 2018 - 31
Food Protection Trends - January/February 2018 - 32
Food Protection Trends - January/February 2018 - 33
Food Protection Trends - January/February 2018 - 34
Food Protection Trends - January/February 2018 - 35
Food Protection Trends - January/February 2018 - 36
Food Protection Trends - January/February 2018 - 37
Food Protection Trends - January/February 2018 - 38
Food Protection Trends - January/February 2018 - 39
Food Protection Trends - January/February 2018 - 40
Food Protection Trends - January/February 2018 - 41
Food Protection Trends - January/February 2018 - 42
Food Protection Trends - January/February 2018 - 43
Food Protection Trends - January/February 2018 - 44
Food Protection Trends - January/February 2018 - 45
Food Protection Trends - January/February 2018 - 46
Food Protection Trends - January/February 2018 - 47
Food Protection Trends - January/February 2018 - 48
Food Protection Trends - January/February 2018 - 49
Food Protection Trends - January/February 2018 - 50
Food Protection Trends - January/February 2018 - 51
Food Protection Trends - January/February 2018 - Sanitary Carcass Dressing and Food Safety Practices in South Central U.S. Small and Very Small Establishments Manufacturing Fresh and Not-Ready-to-Eat Pork Products
Food Protection Trends - January/February 2018 - 53
Food Protection Trends - January/February 2018 - 54
Food Protection Trends - January/February 2018 - 55
Food Protection Trends - January/February 2018 - 56
Food Protection Trends - January/February 2018 - 57
Food Protection Trends - January/February 2018 - 58
Food Protection Trends - January/February 2018 - 59
Food Protection Trends - January/February 2018 - 60
Food Protection Trends - January/February 2018 - 61
Food Protection Trends - January/February 2018 - 62
Food Protection Trends - January/February 2018 - 63
Food Protection Trends - January/February 2018 - 64
Food Protection Trends - January/February 2018 - 65
Food Protection Trends - January/February 2018 - 66
Food Protection Trends - January/February 2018 - 67
Food Protection Trends - January/February 2018 - Beyond the Bio - Joe Frank
Food Protection Trends - January/February 2018 - 69
Food Protection Trends - January/February 2018 - 70
Food Protection Trends - January/February 2018 - PDG Highlight The Dairy Safety & Quality Professional Development Group
Food Protection Trends - January/February 2018 - General Interest Paper The Role of the European Food Safety Authority (EFSA) in the Fight against Antimicrobial Resistance (AMR)
Food Protection Trends - January/February 2018 - 73
Food Protection Trends - January/February 2018 - 74
Food Protection Trends - January/February 2018 - 75
Food Protection Trends - January/February 2018 - 76
Food Protection Trends - January/February 2018 - 77
Food Protection Trends - January/February 2018 - 78
Food Protection Trends - January/February 2018 - 79
Food Protection Trends - January/February 2018 - 80
Food Protection Trends - January/February 2018 - 81
Food Protection Trends - January/February 2018 - Industry Products
Food Protection Trends - January/February 2018 - 83
Food Protection Trends - January/February 2018 - 84
Food Protection Trends - January/February 2018 - 85
Food Protection Trends - January/February 2018 - 86
Food Protection Trends - January/February 2018 - 87
Food Protection Trends - January/February 2018 - Coming Events
Food Protection Trends - January/February 2018 - Cover3
Food Protection Trends - January/February 2018 - Cover4
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