Food Protection Trends - January/February 2018 - 22

TABLE 2. Summary statistics for heavy metals tested in NSW shellfish aquaculture
areas between 1999 and 2014
Mean

Median

Min.

Max.

90th
Percentile

99th
Percentile

Standard
1.4.1
(Schedule 19)

n

mg kg-1

mg kg-1

mg kg-1

mg kg-1

mg kg-1

mg kg-1

ML mg kg-1

As (inorganic)*

62

0.13

0.04

0

0.40

0.39

0.39

1

As (total)^

182

1.93

1.42

0.40

12.01

3.54

8.07

N/A

Cd

305

0.31

0.24

0.08

1.37

0.57

1.30

2

Pb

305

0.05

0.04

0

0.35

0.09

0.17

2

Hg

305

0.01

0.04

0

0.06

0.02

0.04

1 (0.5 mean)

Cu

305

19.47

15.70

0.36

218.42

36.40

65.94

N/A

Se

305

0.55

0.49

0.12

4.10

0.89

1.23

N/A

Zn

305

248.98

230.00

8.40

1333.00

413.00

726.60

N/A

*Inorganic arsenic was measured during 2002 and 2008 only; ^Total arsenic was measured between 2005 and 2014,
Maximum limit (ML), Not applicable (N/A).

TABLE 3. Dietary exposure assessment for Cu, Se and Zn for the 2+ years population age
group expressed as a percentage of the daily dietary guidelines
Heavy Metal
Cu
Se
Zn

Concentration

General population

Median consumers

90th Percentile
consumers

Median (15.70 mg kg-1)

0.02%

2.83%

6.55%

Max. (218.42 mg kg-1)

0.31%

39.32%

91.11%

Median (0.49 mg kg-1)

0.03%

3.53%

8.18%

Max. (4.1 mg kg-1)

0.20%

29.50%

68.40%

Median (230 mg kg-1)

0.16%

20.70%

47.97%

Max. (1330 mg kg-1)

0.95%

119.97%

278.03%

0.8 and 1.6 standard servings of seafood (approximately
1-3 dozen oysters) being consumed each day in order to
exceed the TL (Table 4). For the median concentration of
Zn (230 mg kg-1), dietary exposure estimates were between
0.16 (general population) and 47.97% (high-level consumers) of the TL (1 mg kg-1 bw day-1) (Table 3). Based on the
maximum concentration of Cu (1,330 mg kg-1), dietary
exposure estimates ranged between 0.95 and 278% of the
TL (Table 3). Across all age groups examined, between 1
and 2 standard seafood servings (median concentration,
approximately 2-4 dozen oysters) and 0.2 and 0.4 standard

22

Food Protection Trends January/February

seafood servings (maximum concentration, approximately
< 1 dozen oysters) would have to be consumed in order to
exceed the PMTDI (Table 4).
Some variability was observed in metal concentrations
between sampling years. This was to be expected, particularly as the samples were collected at different times throughout each sampling year. Because of the paucity of coincidental environmental data, this variability was not explored
in detail; however, elevated results were not consistent. For
Cu, Se and Zn, the maximum values observed during the
study were reported from the same harvest area in Brisbane



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
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Food Protection Trends - January/February 2018 - Cover4
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