TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preparation (Claimed): The preparation of (I) comprises (i) reacting a substituted solid support of formula (R-A) (III) with terminal amine protected amino acid of formula (II) to obtain solid supported terminal amine protected amino acid derivative of formula (IV), (ii) selectively removing protecting group of (IV) to obtain supported partially protected amino acid derivative of formula (V), (iii) coupling (V) with W1-containing compound of formula (VI) to obtain Z2-containing supported partially protected amino acid derivative of formula (VII), (iv) selectively removing protecting group of (VII) to obtain Z2-containing supported amino acid derivative of formula (VIII), (v) coupling (VIII) with Q-containing compound of formula (IX) to obtain supported boronic acid compound of formula (X), and (vi) removing the support from (X).D1=aldehyde, carboxylic acid or sulfonyl chloride; andX, Y1=amine protecting groups, where X and Y1 are different from each other.Preferred Components: (II) is terminal amine protected ornithine. The sample is aqueous solution containing aqueous or organic phase. The organic phase includes dimethylformamide, acetonitrile, methanol or ethanol. The formation of covalent bond between mercury(II) ions and (I) is irreversible.    TECHNOLOGY FOCUS - POLYMERS - Preferred Components: The solid support of (III) is amide linked methylbenzhydryl amine resin, wang resin, polyethylene glycol-polystyrene resin, silica nanoparticles, titanium oxide nanoparticles or chitosan. Preferred Definitions:    R1, R2=H, methyl, ethyl, propyl or butyl; and    Q, W1=phenyl boronic acid (optionally substituted by F, CF3, OH, OCH3, NH2 or NO2), anthracenyl or pyrenyl.    SPECIFIC COMPOUNDS - 2 Compounds (I) are specifically claimed, which are 4-(1-amino-1-oxo-5-(2-(pyren-4-yl)acetamido)-pentan-2-ylcarbamoyl)phenylboronic acid (Ia) and 4-(1-amino-1-oxo-5-(anthracene-9-formamido)-pentan-2ylcarbamoyl)phenylboronic acid.    EXAMPLE - Amide linked methylbenzhydryl amine resin-supported 4-(5-(allyloxy-carbonyl-amino)-1-amino-1-oxo-pentan-2-ylcarbamoyl)phenylboronic acid was treated with 1.1 equivalent tetrakis(triphenylphosphine)palladium(0) and phenyl silane were reacted to remove allyloxy-carbonyl-amino group. Then 47l diisopropylcarbodiimide and 40 mg hydroxy benzotriazole were added to a solution of 78 mg pyrene acetic acid in dimethylformamide and activated for 15 minutes, and added to the resin product solution, stirred for about 4 hours, washed with dimethylformamide and methanol and the reaction solution was filtered. The reaction product was added to 10 ml 5% aqueous trifluoroacetic acid solution, stirred for 6 hours to remove the resin and purified by HPLC to obtain 4-(1-amino-1-oxo-5-(2-(pyren-4-yl)acetamido)-pentan-2-ylcarbamoyl)phenylboronic acid with 75% yield