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Volumn 45, Issue 9, 2006, Pages 1423-1426

Laser-induced acoustic desorption mass spectrometry of single bioparticles

Author keywords

Analytical methods; Mass spectrometry; Single particle studies; Viruses

Indexed keywords

ANALYTICAL METHODS; BIOMEDICAL APPLICATIONS; SINGLE CHARGED BIOPARTICLES; SINGLE-PARTICLE STUDIES;

EID: 33746215068     PISSN: 14337851     EISSN: None     Source Type: Journal    
DOI: 10.1002/anie.200503271     Document Type: Article
Times cited : (67)

References (31)
  • 15
    • 33746204470 scopus 로고    scopus 로고
    • note
    • Thin foils such as that made of tantalum also worked well as the sample substrates. The 0.5-mm Si wafer was chosen in this study for its rigidity and versatility of surface modification.
  • 16
    • 33746187329 scopus 로고    scopus 로고
    • note
    • 7 bioparticles on the sample plate allows the analysis of the mass of about 10 charged particles.
  • 22
    • 0031906150 scopus 로고    scopus 로고
    • -1. An aliquot (10 μL) of each solution of sample was deposited on a bare Si wafer and dried in air prior to laser desorption. Peripheral blood samples were taken from a healthy individual and a patient with α-thalassemia (a type of hereditary anemia). Red blood cells were separated by centrifugation and rinsed three times in phosphate-buffered saline at room temperature. A thin layer of red blood cells was smeared on the Si wafer and dried in air. The MCH values of these two blood samples were measured independently with an automated hematology analyzer (Sysmex K-1000) to be 31 and 22 pg, respectively.
    • (1998) J. Virol. , vol.72 , pp. 1577
    • Chung, C.S.1    Hsiao, J.C.2    Chang, Y.S.3    Chang, W.4
  • 23
    • 33746187322 scopus 로고    scopus 로고
    • note
    • As the accuracy of the mass measurement for each particle is better than 1 %, the reported variation in mass represents the intrinsic mass distribution of these particles.
  • 24
    • 33746234916 scopus 로고    scopus 로고
    • Certificate of analysis for NIST Standard Reference Material 1690
    • Certificate of analysis for NIST Standard Reference Material 1690.
  • 30
    • 33746187327 scopus 로고    scopus 로고
    • note
    • Besides bioparticles, we found that some nano- and microparticles composed of metals, inorganic salts, organic compounds, and polymers were also liberated in charged forms. The masses of sinapinic acid powders, NaCl crystallites, gold nanoparticles, and polystyrene microparticles were all measured with this approach. The result indicates that the setup presently described may become a convenient mass spectrometer for the determination of mass of micro- and nanoparticles without the need of external ionization.
  • 31
    • 33746248144 scopus 로고    scopus 로고
    • note
    • -2, a value which is much lower than that of small molecular ions desorbed/ionized by LIAD (Ref. [8]). Because of this low charge density, electron bombardment of negatively charged particles is possible.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.