pnBAS ASTM D 5059:2025

1.1 These test methods cover the determination of lead and manganese gasoline additives content by X-Ray Fluorescence Spectroscopy (XRF). These test methods cover the determination of the total lead content of a gasoline within the following concentration ranges: 0.010 g Pb/US gal to 5.0 g Pb/US gal 0.012 g Pb/UK gal to 6.0 g Pb/UK gal 0.0026 g Pb/L to 1.32 g Pb/L and total manganese content of aviation gasoline within the concentration range of 25 mg Mn/L to 250 mg Mn/L. 1.1.1 Test Methods A and B cover the range of 0.10 g Pb/US gal to 5.0 g Pb/US gal. Test Method C covers the range of 0.010 g Pb/US gal to 0.50 g Pb/US gal. 1.1.2 These Methods A, B, and C are applicable to gasoline containing lead additives. These test methods compensate for normal variation in gasoline composition and are independent of lead alkyl type. 1.1.3 Test Method D is applicable to aviation gasoline containing manganese additives. 1.2 Test Method A (formerly in withdrawn Test Method D2599)—Sections 5 – 10. Test Method B (formerly in withdrawn Test Method D2599)—Sections 11 – 16. Test Method C (formerly in withdrawn Test Method D3229)—Sections 17 – 23. Test Method D—Sections 24 – 29.