§ Norman BakerTo ask the Secretary of State for Transport if he will list the common carcinogens emitted from petrol and diesel vehicles in the UK; and what tonnage of each was emitted in each year since 1997. [177479]
§ Mr. JamiesonThe information requested is as follows:
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Emissions 1997 1998 1999 2000 2001 2002 Road vehicles-petrol Ktonnes 4.3 3.7 3.1 2.6 2.1 1.7 Road vehicles-DERV Ktonnes 1.7 1.5 1.4 1.2 1.1 1.0 Other sources Ktonnes 1.2 1.1 1.2 1.1 1.0 0.9 Total Ktonnes 7.2 6.3 5.7 4.8 4.2 3.7 Benzo[a]pyrene1 Road vehicles-petrol Kg 854 628 469 351 273 218 Road vehicles-DERV Kg 464 422 386 348 317 291 Other sources2 Kg 9,898 8,692 7,778 5,993 6,694 5,866 Total2 Kg 11,215 9,742 8,634 6,692 7,284 6,375 Dioxins3 and Furans Road vehicles-petrol Grammes-TEQ 11.1 8.2 5.4 4.6 3.8 3.0 Road vehicles-DERV Grammes-TEQ 0.4 0.4 0.4 0.4 0.4 0.5 Other sources2 Grammes-TEQ 453.3 386.9 368.4 313.4 314.7 307.0 Total2 Grammes-TEQ 464.8 395.5 374.3 318.4 318.9 310.5 1Benzo[a]pyrene is one compound from the "polycyclic aromatichydrocarbon" (PAH) group. The carcinogenic potency of these PAH's vary, and so Benzo[a]pyrene is used as an indicator for the PAH group. 2 Excludes emissions from natural fires 3Dioxins and Furans are groups of compounds with different toxic potencies. Consequently, it is more representative to express the emissions in terms of "Toxic Equivalents" (TEQs). International Equivalents (I-TEQ) are used for these data.