Abstract: With the improvement of industry requirements and environmental regulations, the requirements for the content of toxic and harmful heavy metal elements in chemical products of aluminum tripolyphosphate (ATP) are becoming increasingly strict. However, there have been no reports on relevant testing standards. Therefore, the method mentioned by the title was proposed to determine the content of 15 elements including chromium, manganese, iron, cobalt, nickel, copper, zinc, arsenic, cadmium, antimony, barium, mercury, thallium, lead, and bismuth in ATP. After pre-drying the sample at 105 ℃ for 3 h, an aliquot (0.100 0 g) was taken, and 3 mL of nitric acid and 3 mL of phosphoric acid were added. The mixture was placed in a super microwave digestion apparatus and digested at 240 ℃ for 30 min by heating program. After cooling to room temperature, the digestion solution was diluted to 50 mL by water, and determined by inductively coupled plasma mass spectrometry. Introduction of a mixture of germanium, indium, and rhenium internal standards online, collision reaction cell technology and KED technology was used to eliminate mass spectrometry interference and non-mass spectrometry interference. It was shown that linear relationships between values of the mass concentration and corresponding signal response ratio of each element to internal standard were kept in definite ranges, with detection limits (3s) in the range of 0.000 300-0.421 mg·kg⁻¹. Test for recovery was made according to the standard addition method, giving recoveries in the range of 82.1%-110%, and RSDs (n=6) of the determined values were less than 6.0%.