𝔖 Bobbio Scriptorium

✦ LIBER ✦

Measurement of PAHs in environmental matrices: results from an interlaboratory comparison on the different steps of the measurement procedure

✍ Scribed by Stefania Balzamo; Paolo de Zorzi; Sabrina Barbizzi; Elisa Calabretta; Monica Potalivo; Silvia Rosamilia

Publisher: Springer-Verlag
Year: 2009
Tongue: English
Weight: 345 KB
Volume: 14
Category: Article
ISSN: 0949-1775
DOI: 10.1007/s00769-009-0576-x

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📜 SIMILAR VOLUMES

Analytical Procedure for the Simultaneou

Analytical Procedure for the Simultaneous Voltammetric Determination of Trace Metals in Food and Environmental Matrices. Critical Comparison with Atomic Absorption Spectroscopic Measurements

✍ Dora Melucci; Giancarlo Torsi; Clinio Locatelli 📂 Article 📅 2007 🏛 John Wiley and Sons 🌐 English ⚖ 185 KB 👁 2 views

The effect of a difference in the reflec

The effect of a difference in the reflection coefficients of rays from symmetrical points of an object on the accuracy of a measurement of its position

✍ V. P. Soldatov 📂 Article 📅 2011 🏛 Springer US 🌐 English ⚖ 191 KB

Relative-risk-estimate bias and loss of

Relative-risk-estimate bias and loss of power in the mantel test for trend resulting from the use of magnetic-field point-in-time (“spot”) measurements in epidemiological studies based on an ordinal exposure scale

✍ Dr. Vincent Delpizzo; Michael R. Salzberg 📂 Article 📅 1992 🏛 John Wiley and Sons 🌐 English ⚖ 763 KB

Oxygen interaction of CdS-based gas sens

Oxygen interaction of CdS-based gas sensors with different stoichiometric compositions was studied by X-ray photoelectron spectroscopy (XPS) and thermal-desorption mass spectroscopy observations combined with conductivity measurements. Three different types of film with different atomic ratios of Cd/S were used in the study of oxygen chemisorption in a low-temperature range between 300 and 570 K. Spray pyrolysis was used for the deposition of the films on glass substrates; XPS and energy dispersive spectroscopy of X-ray together with atomic force microscopy and scanning electron microscopy were used for the characterization of the composition and structure of the films. It was possible to distinguish different temperature ranges for the thermal desorption of the different adsorbed oxygen species. A comparison of the data from XPS and mass-spectroscopy observations with conductance measurements allows to conclude that metallic surface atoms are responsible for different interactions of oxygen species with CdS surfaces.

📂 Article 📅 1995 🏛 Elsevier Science 🌐 English ⚖ 379 KB