peak areas Group time (min) ISTD TCP DCP AES 0 274.036 64.75 0 10 271.83 50.44 11.729 20 235.52 40.67 21.888 30 262.45 31.79 23.71 AVA 0 223.17 48.06 0 10 227.183 30.31 13.21 20 247.605 22.98 21.41 30 129.54 19.221 31.1 EMA 0 265.07 49.116 0 10 242.76 47.646 13.837 20 242.28 37.988 23.775 30 240.599 28.758 27.095 MPT 0 267.38 40.273 0 10 228.38 29.576 13.145 20 242.198 21.612 20.129 30 259.519 14.545 23.914 MJ 0 261.785 42.36 0 10 264.188 58.362 12.933 20 263.906 73.474 1.3615 30 261.647 48.516 21.3316 HBR 0 248.744 45.528 0 10 238.931 37.3441 10.709 20 230.664 25.768 21.0652 30 256.695 15.643 23.7