GGeochimica et Cosmochimica Acta3/4/2026Development and validation of untargeted screening approaches to determine the source and fate of organic matter in coastal sedimentsZhe‐Xuan Zhang·Ding He·Zhao Liang Chen·Arnaud Huguet·Chen Zhao·Julian P. Sachs·Jiying LiRead at Geochimica et Cosmochimica ActaTagsMarine and coastal ecosystemsOceanography