Phosphate lasers

Campbell, J. H., et al., Elimination of Platinum Inclusions in Phosphate Laser Glasses Lawrence Livermore National Laboratory, California, UCRL 53932, Distribution Category UC-712, Livermore, California, 1989. 

FIGURE 21.8 Examples of phosphate laser glass. Individual laser rods vary from 0.6 to 1.2 mm in diameter. 

Figure 6.3. 5 "0 in surface water (data from Gat 1980) compared with that in biogenic phosphates of various mammals from many world regions (data shown in squares are from conventional phosphate analyses Longinelli 1984 Luz et al. 1984 Ayliffe and Chivas 1990 D Angela and Longinelli 1990 Yoshida and Miyazaki 1991 Huertas et al. 1995). For comparison, plotted as filled circles, are 8 0 values for tooth enamel analyzed by laser fluorination (six humans, one shark, and one wolf Kohn et al. 1996). 

Tooth enamel precipitated as silver phosphate and reacted via this method gave values similar to corrected laser data from aliquots of the same tooth enamel (Table 6.1). Thus, the data from the crocodile samples are considered directly comparable with the data from the mammal tooth enamel. 

We thank the editors for including our manuscript even though we were unable to attend the conference. We thank M. Spicuzza for maintaining the laser extraction lines, J. O Neil, H. Frieke, and R. Blake for help with the silver phosphate precipitation and analysis, J. Farquhar,T. Chacko, andY. Kolodny forpro-viding standards, and J. Banfield, K. Barovich, L. Bamngartner, S. Baumgartner,... 

Sharp, Z.D. and Cerling, T.E. 1995 A laser GC-IRMS method for in-situ carbon and oxygen isotope analyses of carbonates and phosphates. Geological Society of America, Abstracts Program 27 A255. 

Radziemski LJ Jr. 1981. Laser-induced photodestruction of the organo-phosphates DIMP and DMMP. 

Figure 8.7 Low mass (choline phosphate) region of a LD mass spectrum of blood from a P. vivax infected human patient (estimated parasitemia approximately 32,000 parasites/pl). Protocol C is used for sample preparation. A commercial LD TOF system is used laser wavelength 337nm. All one hundred single laser shot spectra, obtained from linear scanning of an individual well, are averaged (no data smoothing). The characteristic ions of detected choline phosphate are denoted.

Valproic acid has been determined in human serum using capillary electrophoresis and indirect laser induced fluorescence detection [26], The extract is injected at 75 mbar for 0.05 min onto a capillary column (74.4 cm x 50 pm i.d., effective length 56.2 cm). The optimized buffer 2.5 mM borate/phosphate of pH 8.4 with 6 pL fluorescein to generate the background signal. Separation was carried out at 30 kV and indirect fluorescence detection was achieved at 488/529 nm. A linear calibration was found in the range 4.5 144 pg/mL (0 = 0.9947) and detection and quantitation limits were 0.9 and 3.0 pg/mL. Polonski et al. [27] described a capillary isotache-phoresis method for sodium valproate in blood. The sample was injected into a column of an EKI 02 instrument for separation. The instrument incorporated a conductimetric detector. The mobile phase was 0.01 M histidine containing 0.1% methylhydroxycellulose at pH 5.5. The detection limit was 2 pg/mL. 

Figure 3.92 SERS spectra of (a) SSBipy-Au and (b) PySH-Au electrodes at 0 V vs. SCE in pH 7.0 phosphate buffer/0.1 M NaC104, together with Raman spectra of(c) the buffer employed in (a) and (b) saturated with PySH (c. 50mM). (d) SSBipy in the solid state as a powder. A He/Ne laser (632.8 nm, 30 mW) was used. The signal la belied with an asterisk is due to aqueous CI04. From Taniguchi et at. (1982).

Fig. 1. Plot of kohs vs. [NO] for the reaction of metMb with NO as measured by laser flash photolysis at different temperatures in pH 7.0 phosphate buffer solution (50 mM) 15 °C (filled circles), 25 °C (open circles), 30 °C (filled squares), 35 °C (open squares), 40 °C (filled triangles), and 45 °C (open triangles) (21c).

NMR OU PEO Ph PFD PO Q rpm RT SAPO SBA SBU SDA Nuclear magnetic resonance Osaka University Polyethylene oxide Phenyl Pulsed laser deposition Propylene oxide Quinuclidene Revolutions per minute Room temperature Silicoaluminum phosphate Santa Barbara Secondary building unit Structure directing agent... 

Jones, A. M., Iacumin, P., and Young, E. D. (1999). High-resolution delta 0-18 analysis of tooth enamel phosphate by isotope ratio monitoring gas chromatography mass spectrometry and ultraviolet laser fluorination. Chemical Geology 153 241-248. 

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