European Scientific Journal May 2014 edition vol.10, No.15 ISSN: 1857 – 7881 (Print) e - ISSN 1857- 7431
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(+ SD 9.38) (µg/l) and among controls is 17.72 (+ SD 9.52) (µg/l). this
variation is not statistically significant (p value 0.490) (table 4).
Table 4: the concentration of heavy metals in urine sample of jewelry technicians and
controls
Variable-
study
Mean
(µg/l)
SD
(µg/l)
Variable-
control
Mean
(µg/l)
SD
(µg/l)
P value
Cadmium
12.65
11.12
Cadmium
4.66
2.27
0.001
Nickel
93.07
51.62
Nickel
69.15
38.72
0.071
Copper
20.14
9.38
Copper
17.72
11.50
0.409
The Relationship Between Heavy Metal Concentration with Age and
Experience
As shown in table 5, the variation between heavy metal
concentrations and age is statistically significant for Cd, Cu and NI (p value
0.000, 0.003, 0.000 respectively). It is also significant for experience except
for Cd (p value 0.990) while it is for Cu and Ni (p value 0.000).
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