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vol-13INORGANIC NITROGEN FORMS AS INDICATOR OF SEWAGE POLLUTION
IN TilE COASTAL WATER OFF JEDDAH, RED SEA
ABBAS, M.M.· AND F. M. HADDAD”
••~atlonal Institute of Oceanography and Fisheries, Alexandria, Egypt.
Faculty of Marine Science, King AbduJazlz University, Jeddo”.
ABSTRACT
The distribution of inorganic nitrogen fonas:
alllllOnll, nltrfte Ind nitrite was studied In order
to evaluate the state of pollution of the coastal
waters off Jeddah Centre. SaHnlty, pH, transparency
and dissohed oxygen or hydrogen sulphide were also
IllelSured.
The degree of vartation from natural Red Sea
water conditions waS highly manifisted tR: lower
saltntty and transparency, depletton of dissolved
oxygen, high levels of hydrogen sulphide and the
reduced form of inorganic nitrogen, t .e. alllllonh.
Thts indicates the disposal of fresh water, highly
turbid and with high organic nitrogen content. The
concontratlon of tnorglnic nllrogon f01’1I1 Ind totll
nitrogen in the SOUthlllS tern pal’t of the Il’lIa
invllIlIu”lud Will hluh tll/ll. tI /In,”,,,,I…,1 ltl II”,
“””…./Itt·.. lI,,” ,”chJ.p,1 hI I’nw ~”W/lUP hilI wllh ~Ill/hl
dtlutlun. Slow mIxIng dUll to I hullucJ lllCchlnyl! wllh
the open sea wlter, IS I result of parthl isolation
by blrrter reef, hinders the rapid dtlution Ind
oxidatton of the disposed organic water.
