The NAms used to prepare the standards, 200 lg/mL NDMA
5000 lg/mL NDEA, 2000 lg/mL NDBA in 1 mL of ethanol and analytical
grade NPIP were obtained from Sigma Aldrich (Toluca, Mexico).
Analytical grade NaCl was also obtained from Sigma Aldrich
(Toluca, Mexico). Tri-distilled water was obtained from Merck
(Mexico City). Ultra high purity grade 5 helium from Praxair
(Celaya, Mexico) was used as the carrier gas. The polydimethylsilox
ane/divinylbenzene fiber, df 65 lm, partially crosslinked phase,
needle size 24 ga, for use with manual holder was obtained from
Sigma Aldrich (Toluca, Mexico). The wines were purchased locally
and stored at 4 C in darkness. The standard stock solutions were
prepared with the NAm standards and tri-distilled water, and subsequently
stored in a glass stopped bottle at 4 C in darkness.
The NAms used to prepare the standards, 200 lg/mL NDMA5000 lg/mL NDEA, 2000 lg/mL NDBA in 1 mL of ethanol and analyticalgrade NPIP were obtained from Sigma Aldrich (Toluca, Mexico).Analytical grade NaCl was also obtained from Sigma Aldrich(Toluca, Mexico). Tri-distilled water was obtained from Merck(Mexico City). Ultra high purity grade 5 helium from Praxair(Celaya, Mexico) was used as the carrier gas. The polydimethylsiloxane/divinylbenzene fiber, df 65 lm, partially crosslinked phase,needle size 24 ga, for use with manual holder was obtained fromSigma Aldrich (Toluca, Mexico). The wines were purchased locallyand stored at 4 C in darkness. The standard stock solutions wereprepared with the NAm standards and tri-distilled water, and subsequentlystored in a glass stopped bottle at 4 C in darkness.
การแปล กรุณารอสักครู่..