TY - RPRT TI - Percent recoveries of anthropogenic organic compounds with and without the addition of ascorbic acid to preserve finished-water samples containing free chlorine, 2004-10 AU - Joshua F. Valder AU - Gregory C. Delzer AU - David A. Bender AU - Curtis V. Price PY - 2011 DO - 10.3133/ofr20111295 UR - https://pubs.usgs.gov/publication/ofr20111295 ID - ofr20111295 ER -