[1]
|
H. Sedaira, K. A. Idriss, M. M. Seleim and M. S. Abdel-Aziz, “Use of Quinizarin as a Spectrophotometric Reagent for MgO Content Analysis of Portland Cement and Cement Clinker,” Monatshefte für Chemie, Vol. 129, No. 1, 1998, pp. 49-58. http://dx.doi.org/10.1007/PL00010104
|
[2]
|
V. Ellis and S. Frecman, “Dermatitis Due to Chromate in Cement Part I. Chromate Content of Cement in Australia,” Australasian Journal of Dermatology, Vol. 27, No. 2, 1986, pp. 86-90. http://dx.doi.org/10.1111/j.1440-0960.1986.tb00295.x
|
[3]
|
M. Frias and M. I. Sancher de Rojas, “Determination and Quantification of Total Chromium and Water Soluble Contents in Commercial Cements,” Cement and Concrete Research, Vol. 25, No. 2, 1995, pp. 433-439. http://dx.doi.org/10.1016/0008-8846(95)00029-1
|
[4]
|
J. Geier and A. Schnuch, “A Comparison of Contact Allergies among Construction and Nonconstruction Workers Attending Contact Dermatitis Clinics in Germany: Results of the Information Network of Departments of Dermatology from November 1989 to July 1993,” American Journal of Contact Dermatitis, Vol. 6, No. 2, 1995, pp. 86-94. http://dx.doi.org/10.1016/1046-199X(95)90105-1
|
[5]
|
M. Bock, A. Schmidt, T. Bruckner and T. L. Dicpgen, “Occupational Skin Disease in the Construction Industry,” British Journal of Dermatology, Vol. 149, No. 6, 2003, pp. 1165-1171. http://dx.doi.org/10.1111/j.1365-2133.2003.05748.x
|
[6]
|
S. S. Potgieter, N. Panichev, J. H. Potgieter and S. Panicheva, “Determination of Hexavalent Chromium in South African Cements and Cement-Related Materials with Electrothermal Atomic Absorption Spectrometry,” Cement and Concrete Research, Vol. 33, No. 10, 2003, pp. 1589-1593. http://dx.doi.org/10.1016/S0008-8846(03)00132-7
|
[7]
|
L. Hills and V. Johansen, “PCA R & D Information,” Serial No. 2983, 2007.
|
[8]
|
W. A. Klemm, “Hexavalent Chromium in Portland Cement,” Cement, Concrete and Aggregates, Vol. 16, No. 1, 1994, pp. 43-47. http://dx.doi.org/10.1520/CCA10560J
|
[9]
|
Directive 2003/53/EC.
|
[10]
|
W. A. Klemm, “PCA R & D Information,” Serial No. 2554, 2003.
|
[11]
|
Danish Standard Association, “Charlottenlund, DK-2920,” Denmark, Analyst 24, 1999.
|
[12]
|
USEPA, “SW 864, EPA Method 7195A,” 2003.
|
[13]
|
“ASTM D 1687, Am. Soc. for Testing and Materials,” West Conshokocken, Pennsylvinia, 2002, p. 167.
|
[14]
|
H. Sedaira, “Simultaneous Determination of Manganese and Zinc in Mixtures Using Firs-tand Second-Derivative Spectrophotometry,” Talanta, Vol. 51, No. 1, 2000, pp. 39-48. http://dx.doi.org/10.1016/S0039-9140(99)00244-1
|
[15]
|
A. Bhalotra and B. K. Puri, “Simultaneous First Derivative Spectrophotometric Determination of Palladium and Nickel Using 2-(2-Thiazolylazo)-5-dimethylaminobenzoic Acid as an Analytical Reagent,” Microchimica Acta, Vol. 134, No. 3-4, 2000, pp. 139-143. http://dx.doi.org/10.1007/s006040070029
|
[16]
|
M. Benamor and N. Aguerssif, “Simultaneous Determination of Calcium and Magnesium by Derivative Spectrophotometry in Pharmaceutical Products,” Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, Vol. 69, No. 2, 2008, pp. 676-681. http://dx.doi.org/10.1016/j.saa.2007.05.020
|
[17]
|
T. C. OˇHaver, “Derivative Spectroscopy and Its Applications in Analysis,” Analytical Proceedings, Vol. 19, 1982, pp. 22-46. http://dx.doi.org/10.1039/ap9821900022
|
[18]
|
H. Ishii and K. Satoh, “Determination of Micro Amounts of Samarium and Europium by Analogue Derivative Spectrophotometry,” Fresenius’ Zeitschrift für Analytische Chemie, Vol. 312, No. 2, 1982, pp. 114-120. http://dx.doi.org/10.1007/BF00467724
|
[19]
|
J. J. Berezas Nevada, C. G. Cabanillas and F. Salinas, “Spectrophotometric Resolution of Ternary Mixtures of Salicylaldehyde, 3-Hydroxybenzaldehyde and 4-Hydroxybenzaldehyde by the Derivative Ratio Spectrum-Zero Crossing Method,” Talanta, Vol. 39, No. 5, 1992, pp. 547-553. http://dx.doi.org/10.1016/0039-9140(92)80179-H
|
[20]
|
H. Sediara, K. A. Idriss and M. S. Abdel-Aziz, “5-Chlorosalicylic Acid Spectrophotometric Method for the Determination of Titanium and Simultaneous Determination of Titanium (IV, Oxide and Iron) III, Oxide Content of Portland Cement,” Analyst, Vol. 121, 1996, pp. 1079-1084. http://dx.doi.org/10.1039/an9962101079
|
[21]
|
K. A. Idriss, H. Sediara, M. S. Abdel-Aziz and H. M. Ahmed, “Rapid Test Methods for Minor Components Analysis of Hydraulic Cement. Spectrophotometric Determination of Manganese Oxide Content of Portland Cement and Cement Raw Meal,” Talanta, Vol. 50, No. 4, 1999, pp. 913-919. http://dx.doi.org/10.1016/S0039-9140(99)00175-7
|
[22]
|
K. A. Idriss, E. Y. Hashem, M. S. Abdel-Aziz and H. M. Ahmed, “Direct Spectrophotometric Determination of Aluminium Oxide in Portland Cement and Cement Clinker. AN insight into the Solution Equilibria and Analytical Aspects of the Aluminium-Quinizarin System,” Analyst, Vol. 125, 2000, pp. 221-225. http://dx.doi.org/10.1039/a906307b
|
[23]
|
K. A. Idriss, H. Sediara and H. M. Ahmed, “An Insight into the Solution Equilibria of Magnesium II, with Purpurin and Spectrophotometric Determination of Magnesium,” Talanta, Vol. 54, No. 2, 2001, pp. 369-375. http://dx.doi.org/10.1016/S0039-9140(00)00674-3
|
[24]
|
K. A. Idriss, H. Sediara and S. S. Ahmed, “Determination of Strontium and Simultaneous Determination of Strontium Oxide, Magnesium Oxide and Calcium Oxide Content of Portland Cement by Derivative Ratio Spectrophotometry,” Talanta, Vol. 78, No. 1, 2009, pp. 81-87. http://dx.doi.org/10.1016/j.talanta.2008.10.044
|
[25]
|
“The Technical Rules for Hazardous Substances,” TRGS 613, 2002.
|
[26]
|
A. Vogel, “Textbook of Quantitative Chemical Analysis,” 5th Edition, ELBS, London, 1988.
|
[27]
|
NIST, “Certificate of Analysis, SRMs, 1880b, 1885a,” National Institute of Standards and Technology, Gaithersburg, 1989.
|
[28]
|
P. Voznica, J. Havel and L. Sommer, Collection of Czechoslovak Chemical Communications, Vol. 45, 1980, p. 54.
|
[29]
|
K. A. Idriss, M. Saleh, M. Abu-Bakr and H. Sedaira, “Spectrophotometric Study of the Complexation Equilibria of Zirconium IV, with 1-Amino-4-hydroxyanthraquinone and the Determination of Zirconium,” Analyst, Vol. 113, No. 11, 1988, pp. 1643-1647. http://dx.doi.org/10.1039/an9881301643
|