Contents

Journal of Analytical Chemistry

Vol. 76, No. 13, 2021

Articles

Big Free-Access Chemical Databases in Non-Target Mass Spectrometry Analysis

B. L. Milman, E. V. Ostrovidova and I. K. Zhurkovich p. 1477  abstract

The Effect of Pseudorandom Sequence Systematicity on Signal-to-noise Ratio in Hadamard Transform Ion Mobility Spectrometry

A. P. Sarycheva, A. Yu. Adamov, S. S. Lagunov, G. V. Lapshov, S. S. Poteshin and A. A. Sysoev p. 1485  abstract

Rapid Detection of Vegetable Fat Additives in Condensed Milk by DART Mass Spectrometry

S. V. Goryainov, C. Esparza, A. R. Borisova, K. Fadi, E. O. Rystsova, N. Yu. Polovkov, R. S. Borisov and V. G. Zaikin p. 1493  abstract

Development of a Surface Ionization Mass Spectrometry Method for the Highly Sensitive and Highly Selective Analysis of Morphine in Biofluid

Sh. D. Akhunov, B. Sh. Kasimov, Kh. B. Ashurov and D. T. Usmanov p. 1499  abstract

A New Approach to the Mass Spectrometric Analysis of Aqueous Electrolyte Solutions Using a Gas-Dynamic Interface with a Gas Jet at the Inlet of a Time-of-Flight Mass Spectrometer with Orthogonal Ion Injection

V. V. Raznikov, V. V. Zelenov, E. V. Aparina, I. V. Sulimenkov and A. R. Pikhtelev p. 1505  abstract

Formation of Deuterium-Substituted Ions from a Solution Introduced into a Radio-Frequency Quadrupole under the Action of a Gas Jet Passed through an Electron Ionization Ion Source

V. V. Raznikov, V. V. Zelenov, E. V. Aparina, I. V. Sulimenkov and M. O. Raznikova p. 1512  abstract

DART Mass Spectrometry in the Analysis of Organometallic Complexes

S. V. Goryainov, C. Esparza, L. N. Kulikova, A. R. Borisova, P. A. Kumandin, A. S. Antonova, E. O. Rystsova, M. T. Oshakbaev, G. T. Omarova and N. Yu. Polovkov p. 1520  abstract

Correctness Criterion for Calculating Ion Trajectories in Edge Magnetic Fields of Static Sector Mass Analyzers

V. D. Sachenko and A. S. Antonov p. 1525  abstract

Determination of p-Methoxyphenacyl Bromide Derivatives of Alkylmethylphosphonic Acids in Urine Using Gas Chromatography with High-Resolution Mass Spectrometric Detection

D. V. Oreshkin, T. M. Baygildiev, M. F. Vokuev, A. V. Braun, I. A. Godovikov, I. V. Rybalchenko and I. A. Rodin p. 1530  abstract

Peculiarities of 2,6-Di-tert-butylpyridine Protonation: Mobility of Protonated Molecules

A. V. Lebedev p. 1538  abstract

Memory Effect as a Source of Abnormal Uncertainty in the Sr Isotope Analysis by the Double Spike Technique

A. Yu. Kramchaninov p. 1549  abstract

Identification of Hydrocarbons Associated with Mumijo in the Tyva Republic (Russia) by Gas Chromatography–Mass Spectrometry

D. A. Bushnev and S. A. Ondar p. 1558  abstract

Letters to the Editor

Detection of (Н2О$)_{n}^{{ + \centerdot }}$ and Н+(Н2О)n Cluster Ions Formed as a Result of Atmospheric Pressure Photoionization of Mixtures of Water Vapor with Aromatic Hydrocarbons in Helium

Yu. S. Yashin and I. A. Revelsky p. 1563  abstract