Determination of Some Heavy Metals in Real Samples by FAAS after Preconcentration on 4-Nitro-2-(2-nitro-phenelazo)phenol Modified Activated Carbon
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چکیده
منابع مشابه
application and construction of carbon paste modified electrodes developed for determination of metal ions in some real samples
ساخت الکترودهاِی اصلاح شده ِیکِی از چالشهاِی همِیشگِی در دانش شیمِی بوِیژه شیمِی تجزیه مِی باشد ،که با در نظر گرفتن سادگِی ساخت، کاربردی بودن و ارزان بودن روش مِی توان به باارزش بودن چنِین سنسورهاِی پِی برد.آنچه که در ادامه آورده شده به ساخت و کاربرد الکترودهاِی اصلاح شده با استفاده از نانو ذرات در اندازه گِیرِی ولتامترِی آهن وکادمِیم اشاره دارد. کار اول اختصاص دارد به ساخت الکترود خمِیر کربن اصلاح شده با لِیگاند داِ...
15 صفحه اول4-Nitro-2-phenoxyaniline
In the title compound, C(12)H(10)N(2)O(3), the oxygen atom bridging the two aromatic rings is in a synperiplanar (+sp) conformation. The dihedral angle between the aromatic rings is 71.40 (12)°. In the crystal, mol-ecules are linked by inter-molecular N-H⋯O hydrogen bonds.
متن کاملThe determination of Cu2+, Fe3+, Zn2+ and Pb2+ in real samples by flame atomic absorption spectrometry after their separation- preconcentration on 2-(2-nitrophenylazo)- naphthalen-1-ol loaded on activated carbon
A sensitive and simple method for simultaneous preconcentration of trace heavy metal ions in some cerealand vegetable samples has been reported. The method is based on the adsorption of Cu2+, Fe3+, Zn2+ and Pb2+on 2-(2-nitro-phenylazo)-naphthalen-1-ol (NPN) loaded on activated carbon (AC). The adsorbed metals onactivated carbon were eluted using 3 ml 4 mol L−1 nitric acid. The influences of the...
متن کاملDetermination of Copper, Nickel and Cobalt in Water and Food Samples by Faas after Separation and Preconcentration Using Multiwalled Carbon Nanotubes Modified by Methyl-(2-pyridyl) Ketone Oxime
A solid phase extraction (SPE) procedure was presented for the preconcentration of copper, nickel and cobalt using multiwalled carbon nanotubes (MWCNTs) modified by methyl-(2-pyridyl) ketone oxime (MPKO, as a new complexing agent) as a solid sorbent prior to their determination by flame atomic absorption spectroscopy (FAAS). Some analytical parameters including pH, sample volume, concentration ...
متن کاملDetermination of beryllium in solid samples by flame atomic absorption spectrometry after preconcentration on activated carbon.
It is generally supposed that the preconcentration procedure is used for the determination of metal concentrations under the sensitivity of the measurement method. This study showed that preconcentration is also need for the beryllium (Be) concentration over the sensitivity of atomic absorption spectrometry. For this purpose, a simple and selective method for the determination of Be in solid sa...
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ژورنال
عنوان ژورنال: Chemical Science Transactions
سال: 2012
ISSN: 2278-3458,2278-3318
DOI: 10.7598/cst2012.168