CINXE.COM

<!DOCTYPE html><html lang="en-US"><head><title>Just a moment...</title><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta http-equiv="X-UA-Compatible" content="IE=Edge"><meta name="robots" content="noindex,nofollow"><meta name="viewport" content="width=device-width,initial-scale=1"><style>*{box-sizing:border-box;margin:0;padding:0}html{line-height:1.15;-webkit-text-size-adjust:100%;color:#313131;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,Noto Sans,sans-serif,Apple Color Emoji,Segoe UI Emoji,Segoe UI Symbol,Noto Color Emoji}body{display:flex;flex-direction:column;height:100vh;min-height:100vh}.main-content{margin:8rem auto;max-width:60rem;padding-left:1.5rem}@media (width <= 720px){.main-content{margin-top:4rem}}.h2{font-size:1.5rem;font-weight:500;line-height:2.25rem}@media (width <= 720px){.h2{font-size:1.25rem;line-height:1.5rem}}#challenge-error-text{background-image:url(data:image/svg+xml;base64,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);background-repeat:no-repeat;background-size:contain;padding-left:34px}@media (prefers-color-scheme:dark){body{background-color:#222;color:#d9d9d9}}</style><meta http-equiv="refresh" content="120"></head><body class="no-js"><div class="main-wrapper" role="main"><div class="main-content"><noscript><div class="h2"><span id="challenge-error-text">Enable JavaScript and cookies to continue</span></div></noscript></div></div><script>(function(){window._cf_chl_opt={cvId: '3',cZone: "publications.waset.org",cType: 'non-interactive',cRay: '917bf94f58fcfd6f',cH: 'G5QCznM6F1slSTpBoLRaCpcCVlFTu41k5FxPzt.pItc-1740531371-1.2.1.1-SktIZ0.T9xJetebvdkjoEP0DlreKG5A3VDhIWhQ4JsmcJCwlc8d25JYX22kwNTAG',cUPMDTk: "\/abstracts\/41562\/polycyclic-aromatic-hydrocarbons-pollution-and-ecological-risk-assessment-in-surface-soil-of-the-tezpur-town-on-the-north-bank-of-the-brahmaputra-river-assam-india?__cf_chl_tk=MR.nGHyhsRRqcv2HhpvIq9LncK0.NBPb56KlnknmDzM-1740531371-1.0.1.1-Vtm5R4xtOBb1vcVoqp50Uty_q7Xh37gFOS4ymV6Y08Y",cFPWv: 'b',cITimeS: '1740531371',cTTimeMs: '1000',cMTimeMs: '120000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/abstracts\/41562\/polycyclic-aromatic-hydrocarbons-pollution-and-ecological-risk-assessment-in-surface-soil-of-the-tezpur-town-on-the-north-bank-of-the-brahmaputra-river-assam-india?__cf_chl_f_tk=MR.nGHyhsRRqcv2HhpvIq9LncK0.NBPb56KlnknmDzM-1740531371-1.0.1.1-Vtm5R4xtOBb1vcVoqp50Uty_q7Xh37gFOS4ymV6Y08Y",md: "2CRzdKQga82aa8_2xdk7lgjfsaOCmhRzEOuGxz4c4bg-1740531371-1.2.1.1-gK9gB1Bn6AMRfjDgILYW1ShXxF3XTLzcMnEj_6DYYh1JKhDRcBp8cIvAZUcL3gY7CZAjf5uLIvQcr_UQvi0AQAPs6VpqSP5VygMI3d2Q4XtDr0awr_db4MBUqS2FDDlJz7BFhkFRAzBJaATTViX5DG4sCpxy0Fhce3w._ATg7NaIoxyEqxKlQYpHElVQFP7QUVshcU2e_xu8UlKxQK62RmxvsRtASE7fL3QWgThKx57_7lNdkJPapsqsPDPd0nN7oOlw2yRRIup7rchuhEd2inJZXavkUxEy3A6PPcNxizi0J7DCgDK3a_Zd_qZKaO4qUCg5qsSWiMQyzEODzlmtg1CV2NE07ctyq5ipIVXUMYOgLQbKyGuXmemLo3Bd367dahl4xDG40McXE9C.FbEbNBOnFLudlKCS7dEkYlPsFg06jlUQ3JmLNFg3m_myGz_aDOG38FpQxboFzHyFf7GLOjISn7JXo86tWIqf5lyJyKqyvPDoypMgVgYomYnhbIPR8IM5NRnnCsWVA5uirYaerAQgPv9rNTy8I.GAuJ71o_FGiURHhV2u25j7bvPvTRkswFCNNOseYsZE_VnNZbnA4Y4i6ByhjcEY6BXoT71U4w0OwITywy1x1Q1LENGi.n_aNRmpRQ9si8r.eVj6ozE74oDZx20tYz.zsSg58DX8Mfm4_8Aw.p1h37Cxzpk0DL7PLv0nlRMKThKuiIDak0LCJojtmprkYN2ugZZAgjLkqt5Z9wj22EGjQsTE4vw_upsAWIdqeDV66nwfmbfb1T3E5_5gOu2.Pzv.7k6Oysx5hgA94RBq8XTRMrIjqz97YKdLGBti.p4Ve_Kv6_LvGy6jHmtH6fcUDY5pO1TSPItSIW7NWxuZocQ4Ql59qgtSVGAzWzkseDEU6V7NKSr3Xhi8mRofGHew0Ct4s5nxUU74j3KyivVfijhUEa0VwSxHOf17LJ1FCAZB0zWpnSS4SohOGfIo0W1jSs0yr0ENzZdnMsGfUgbqFpZL_ACBfq0hegw.lydhdbc8Ek6njOzZ_sADnxMexgUJvVUkYR7m1Fm4Yvfx3SlEwXSiLHgPoLe3IHr7pV7AVAopxnwgaWZtL2JTesEdzQXYier4sJysLxJdA1klAqr37kN9CLwdUqjppiQDQ5sDj2I6Gh.thkcMa3bluiEM7_SQ0LYb.wts8bJUSpWX9E0Mw6.eMS_N5xS8xdeHSXM22IXEtVDlOJhgJ7qJjos2yVMhLyfoor9M0Idebx9aA3DiRxYDoM7E0940U11cpWfmw4tu1IgfwzUW6EUkYEz0OwlrlG1Q0lr9kMaS3_B.04GUeWL2qcCblFeDQyhLwDCudya7rnkcFoXZpCbHXT3szYRICvvDBOwGOoLxm86XEzws33QfXBGhuLbsIZRTGBHHYRWA9JKQ4ghtGOtT23N6KQyLlWRwBkQS0lnejQXWxBumfBW8Lqy32S6YM63_9Fu.H3svb6Q8EkyccFrLMnBZTqtzl.32HdRQ.fY4eFpnnmeFL8Cg8qsiyYz9C6vzw_82Pb.WZTCscXUvxCFMHyE8HrvG_Z9_xIK_MTW9qCG9O5U35aGGSGduJM.Fpfm2NSpaCIRN1TH_5zWe6RetqgKYzDfWpDXjKfBmaWtq1MpcJsgahU.aEMAOIN7hU0GKdi7elASOh.x2hrMW7ghrRNFx6vz_Hku1rO86ksOKgobSMZdgv3FYe6u46txIJ4RRXsI3VcLFGrzSdMW56joXul_Xb.DfKt5sWGr8Z5tIqyd24gFliHndQ6UT1AygUaauY_bZFkg1sFgp_kXR.7qYvhfWAay4lXGEg23fh9K0E02.WHopgWR1.oyMNSvS1_Dp8nb1aYsYWNGJzFepgUQ5knDlHtS97ST2xHQCcm7TxyzeUdngvGVolRt0xa4oQt1t8GvtYQpMEWxZopQmKCkZaI9JZcSFL_7PTJnzxYal2Eu1qgfK_xBhp_fmztiP6FKmyZgL5dwVI_PzELNv9NWHu4jTzFxsvB.b2Zu3YJpuDUWVHUY60lJbGi6E7gPSAj4YuKej7DTdpYZ76Wxt4creO.hY140woDWfJAYnzPZHYUzVJ0.Z9lYl.l6wn9bOQMb4FBtGSHyBiJPhtiFDUGXbskQ4dIbM6CuePFURLoC5CGzXJrbnzZ0lOJ_iO2ONOzNJj71tyT8f4SMJGW.Rh4Ki7zLJtEq6ltEBWPhFXZIFxmbNYua5bUYqK4G83R.uGIis2p3DJJ0kgQMWiMu70PX2kNMY1IQqeHLnMim6yfCD1W1jWC7f__EybsJRPFXbOmD6MJ1Z9z2_7hCuVtvEO7nhIy7IPWAN_ID3MxbJ2qbB4hw",mdrd: "CvpA8WJlfAr_kfTs._nOTTsvQPPRtZpdVDLD8cl_8Ok-1740531371-1.2.1.1-KD9I0z7._ogl60E7fgvAP4MkWoi0iPoSAXtZKy6tTMPpgiI5Oo3aOoGQwYQDt.IwGLf_R7Vl8YRkIyKxXFj4zjdFKgTtGsW3sa2hHBoKL7xlKcX8QhK_KRvKvL_6Q9d6uGyrLCotRbhLZQn0YPZuzwtXlV8CMkUYtH2xNtBwKdzodwOWu1GTNhOanzOGSM7DkTtmXYbG6oLwqC0ocw4phT_Ap19GvvKzkwxIox9Gt8.sssVkf_CiLui.6PQSa7SsEOI_RKZMBXi985afxs3oeHUejeA0pkQKV8dvz1LPSdSNAqRAwM2YgkpwItn.UMJH86xqd20CS2dO4VKa_5Pi4TV1lluqgFo5mZwTR2nOeHUQRLrnqTv69kvkxE5x8VXDVPTam1bOv3J8Cjy5XncAHp0CL9q5DziFirb4rmZ.VWDQ8UPHYcaHBoQKQFizCqQH7QQ2393ikO8XrlF71k6APKYM0a45tQTy8qFsk.IjWVLNJckpQnR7kVXGKx.6OUZ68MOTc3u0olmA1IEJs7mPUGZae5hftQpd0l4lLNY8U4McJrII5eiLY8ziQeNhHWr5NgTJx6wW8LVE56DavWX9tK1wWOgObRp7ilTNnoS1NXUY91oEsQzSK_qLGp0wegKJR9UDQWcDF5ah_Ck7OtwfVGrRXz.CNQQ1fiWdVbwC5aIewfOylqWT1vH9.V0Wg.HGyljNv70JlGMPztPWRjGl018xL7zz73CmbznvtjMWOHdIN9acCmAI2U23myfQqkVUFsjlVBco_3G1fP.fCWvCodJIcCHdOspb.jlL9OFdyFkJT2uxjEuIF964U_10Yl9xWHk1MlVATas1kt1WWTPCzWUAmxh3xHuyNqhWRVu36A3DDGPjs_uS0MfCfSdTmcbFJ0guunxwJM0fIyehvHyl2k63yynlZhKptjLsYi7Lm1BR1HVFY_KdRBxRhI44f1tuOciWcN6KXe45srdSTPouXm4h9RKF1QYz_l4d4x3WP0UgL8EwHPfsLAYymJrB26f_o2ysv4wv9LRewFQns4LAD9HP56d4jQI6RdAz537XeMB1WZ3M997Ii3pHWdM0exEuMtlRlssvmZrtR2uRzaJK.6svMlJyE4edp2d19sXkuSAYdZFUB8fPhS6JKPsR1f8VlF8_GGFWL0.mzH_8UXXERBmUIEb5TaKZLM0HpBHQZL.WsJEuOO.ik9zvuO_oZOYtMi54sFlMXbIbd_D4f4LLT1b6yTYS0qECKYvYtzMyEox.OU33FqH4nHXsT7vYKMVixRMhGuaMo4YXtsWdHlNUHQFZjS0uRMIOLLK8FI.Vv3WN2nsWmAYQATe2fMISSOOAwas7dutTX0zXopd0aBWyuhnmPCs8_tV1vWMclLyHK_vjEHo.lqfFNxBxNbaQBpvFmUWoXUjrU_CK1FdzJf7Rqz6En74z4OQrcCz0574Ujnsyck2l3Q5whyvTEQOJq07G7M9vY5VSYPUSSdiBTvCxOH6xEKbbGAwQ.eRW7QpVar4n9iEEeuD9MnWSFk9.4tHLNG8b01zZAYbqTvtKbjVa0zMJhBpmI1n3VrOq5e8yWfC5wxK26u63ipnCrpSQxqRNwxTz9oDwoKe_CnJ3gw3o79ZEd3naHmcwXRNeGWwalxgaLg5wsaI0XiiGK2NtWD7eXz9_QYlqj7cwzKX3DFIw4LqIlq5nI3v1l_3pa_oe5La4wL8hi0ZUZW51yt1_DbJ9zj1COUTJrz9KAzlpFJlui2kxTwWUyFAhdH9SqDCkOqSSyOvdwwL3SeOMf4A0WZs6._Fzgnri9kEkd8kqKu46WIa83BvlnFV2diorVynzDm.XTcVRlw_gEwEmkDzcvqnnOBnXYz4_6Skg4SsyEhxZV6Jr_lzvttGd7Z26R8Fi7NEh10pjSu2g33EdZC0KuAi8sx7czrIlAjS.HYjSi5lmsEHgqBOSii._yHmVZucjQc73ZFLfEB0WZOp24F.W36bDj7aBOfJRxfWSm1QVnuwh4w"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=917bf94f58fcfd6f';window._cf_chl_opt.cOgUHash = location.hash === '' && location.href.indexOf('#') !== -1 ? '#' : location.hash;window._cf_chl_opt.cOgUQuery = location.search === '' && location.href.slice(0, location.href.length - window._cf_chl_opt.cOgUHash.length).indexOf('?') !== -1 ? '?' : location.search;if (window.history && window.history.replaceState) {var ogU = location.pathname + window._cf_chl_opt.cOgUQuery + window._cf_chl_opt.cOgUHash;history.replaceState(null, null, "\/abstracts\/41562\/polycyclic-aromatic-hydrocarbons-pollution-and-ecological-risk-assessment-in-surface-soil-of-the-tezpur-town-on-the-north-bank-of-the-brahmaputra-river-assam-india?__cf_chl_rt_tk=MR.nGHyhsRRqcv2HhpvIq9LncK0.NBPb56KlnknmDzM-1740531371-1.0.1.1-Vtm5R4xtOBb1vcVoqp50Uty_q7Xh37gFOS4ymV6Y08Y" + window._cf_chl_opt.cOgUHash);cpo.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(cpo);}());</script></body></html>