𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Direct Determination of Copper in Biodiesel Using Stripping Analysis

✍ Scribed by Eduardo S. Almeida; Marina A. N. A. Monteiro; Rodrigo H. O. Montes; Rafael Mosquetta; Nívia M. M. Coelho; Eduardo M. Richter; Rodrigo A. A. Muñoz

Publisher
John Wiley and Sons
Year
2010
Tongue
English
Weight
210 KB
Volume
22
Category
Article
ISSN
1040-0397

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

A simple, effective, and low‐cost protocol for copper determination in biodiesel, with no sample decomposition, is reported. Samples were diluted in an ethanol‐water solution (with HCl as supporting electrolyte) generating a homogeneous mixture at which copper was directly detected using stripping chronopotentiometry using a gold working‐electrode. The optimized mixture was 100 µL (0.088 g) of biodiesel, 15 mL of ethanol, and 5 mL of 0.1 mol L^−1^ HCl aqueous solution. The estimated detection limit was 200 ng g^−1^ (300‐s deposition time). The elimination of the sample treatment step offers the possibility of on‐site measurements in association with commercially‐available portable potentiostats.

📜 SIMILAR VOLUMES

Determination of lead, copper, and cadmi
Determination of lead, copper, and cadmium in wine and beer by potentiometric stripping analysis
✍ Daniel Jagner; Stig Westerlund 📂 Article 📅 1980 🏛 Elsevier Science 🌐 English ⚖ 450 KB

Instrumentation and analytical procedures for the direct determination of lead, copper and cadmium in alcoholic beverages in the concentration range I.-100 rJg I-' are outlined. The results are discussed with respect to detection limit, precision and time for analysis. Comparison with results obta

Determination of Selenium(IV) by Cathodi
Determination of Selenium(IV) by Cathodic Stripping Voltammetry Using a Copper Microelectrode
✍ D. SUz̆; S. Blagojević; J. Vidić; M. Erceg; D. Vu c̆ć 📂 Article 📅 1997 🏛 Elsevier Science 🌐 English ⚖ 71 KB

Using a copper microelectrode of Ç5-mm diameter, the concentration of Se(IV) was determined by cathodic stripping voltammetry either from HClO 4 (0.1 M) or from NaClO 4 (0.1 M) supporting electrolytes. The preconcentration time of 15 s was chosen as optimal, and calibration graphs were constructed f

Anodic stripping voltammetric determinat
Anodic stripping voltammetric determination of total copper in blood plasma
✍ Jorge E. Tahán; Romer A. Romero 📂 Article 📅 1993 🏛 Elsevier Science 🌐 English ⚖ 475 KB

## AbStlXCt Blood plasma specunens from renal patients and healthy control subjects were mmerahzed by nucrowave lrradlatlon for subsequent detennmatlon of total copper by dtierentlal-pulse anodlc stnppmg voltammetry (DPASV) Graphite furnace atomic absorption spectrometry (GFAAS) was used for accur

Adsorptive Stripping Voltammetric Determ
Adsorptive Stripping Voltammetric Determination of Copper(II) Ion Using Phenyl Pyridyl Ketoneoxime (PPKO)
✍ Mehrorang Ghaedi; Mohammad K. Amini; Ali Rafi; Shiva Gharaghani; Ardashir Shokro 📂 Article 📅 2005 🏛 John Wiley and Sons 🌐 English ⚖ 113 KB 👁 1 views

A sensitive and selective procedure is presented for the voltammetric determination of copper(II) ion. The procedure involves an adsorptive accumulation of Cu 2+ -PPKO on a hanging mercury drop electrode, followed by a stripping voltammetric measurement of reduction current of adsorbed complex at ab