模型where 变量值怎么变成字段值查询了 导致sql报错

        $account = $request->account;
        $user = $user::query();
        $user->when(is_email($account), function ($query )use ($account)  {
            return $query->where('email',  $account);
        });
        $user->when(is_number($account), function ($query )use ($account)  {
            return $query->where('phone', $account);
        });
        $user->first();

日志中看到执行的语句是

select * from `pe_users` where `email` = 32523351@qq.com limit 1

email没有单引号 就报错 这个怎么处理呀

1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ‘@qq.com limit 1’ at line 1