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Survey of Dioxin Emission from PCP-treated Wood

5 Results

• 5.1 PCP screening of pallet board samples
• 5.2 Dioxin analysis of pallet board sample
• 5.3 Construction-wood samples

5.1 PCP screening of pallet board samples

Table 5.1 shows the analysed concentrations of pentachlorophenol in the pallet board samples. All samples have only been single-determined. The results show that 6 out of 10 samples contained pentachlorophenol. Sample number 2 from Portugal had the highest concentration of pentachlorophenol, and the dioxin concentration in this sample was therefore afterwards measured (see result in next section).

Table 5.1 shows that out of the 6 samples with a detected pentachlorophenol concentration, two of the samples came from Spain; two came from France and two from Portugal. This means that both analysed samples from Portugal and 2 out of the three samples from France were positive.

It should be noted that the concentration of PCP registered in the samples represents an average of the concentration over the entire thickness of the individual samples.

Table 5.1 Results of screening of pentachlorophenol in pallet board samples.

* The results have been deducted the value of the blind sample.

1 Not detected.

5.2 Dioxin analysis of pallet board sample

Pallet board sample number 2 was analysed for dioxin, but as table 5.2 shows the dioxin concentration in the pallet board sample is low. It is noted that only one analysis has been made, and the result may thus be regarded as an indication of the dioxin level in these items rather than solid documentation.

As for PCP the concentration of dioxin registered in the sample represents an average of the concentration over the entire thickness of the sample.

Table 5.2 Results of dioxin analysis of pallet board sample no. 2

nd = Not detected

5.3 Construction-wood samples

The five samples of construction wood have been analysed for dioxin by single determination. The pentachlorophenol concentration in the samples has not been analysed.

Table 5.3 shows the concentration of the different isomers measured and the total concentration of the dioxin isomers given in ng I-TEQ/kg and in ng WHO-TEQ/kg.

The concentration of dioxin registered in the samples represents an average of the concentration over the entire thickness of the individual samples.

Table 5.3 Results of dioxin analyses of the five samples of construction wood.

* The values have been deducted the values of the blind sample.

** The values written in italics are detected with high uncertainty.

nd = Not detected

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Version 1.0 Juli 2004, © Danish Environmental Protection Agency